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  • Anders Schmidt 75 posts 206 karma points
    May 07, 2014 @ 13:38
    Anders Schmidt
    0

    Umbraco 7 (Root element is missing)

    I am working on a Umbraco 7 project. Suddenly it crashes with error:

    Only thing I have been working with is a new property editor in App_Plugins.

    I am using Umbraco.sdf database.

    Any Idears? Thanks

     

    Server Error in '/' Application.

    Root element is missing.

    Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

    Exception Details: System.Xml.XmlException: Root element is missing.

    Source Error: 

    An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.


    Stack Trace: 

    [XmlException: Root element is missing.]
       System.Xml.XmlTextReaderImpl.Throw(Exception e) +69
       System.Xml.XmlTextReaderImpl.ParseDocumentContent() +5626074
       System.Xml.XmlTextReaderImpl.Read() +213
       System.Xml.Linq.XDocument.Load(XmlReader reader, LoadOptions options) +44
       System.Xml.Linq.XDocument.Load(String uri, LoadOptions options) +58
       System.Xml.Linq.XDocument.Load(String uri) +6
       Umbraco.Core.Services.SectionService.LoadXml(Action`1 callback, Boolean saveAfterCallback) +143
       Umbraco.Core.Services.SectionService.<GetSections>b__3() +145
       Umbraco.Core.Cache.<>c__DisplayClass8`1.<GetCacheItem>b__7() +41
       Umbraco.Core.Cache.HttpRuntimeCacheProvider.GetCacheItem(String cacheKey, Func`1 getCacheItem, Nullable`1 timeout, Boolean isSliding, CacheItemPriority priority, CacheItemRemovedCallback removedCallback, CacheDependency dependency) +246
       Umbraco.Core.Cache.HttpRuntimeCacheProvider.GetCacheItem(String cacheKey, Func`1 getCacheItem, Nullable`1 timeout, Boolean isSliding, CacheItemPriority priority, CacheItemRemovedCallback removedCallback, String[] dependentFiles) +159
       Umbraco.Core.Cache.HttpRuntimeCacheProvider.GetCacheItem(String cacheKey, Func`1 getCacheItem) +107
       Umbraco.Core.Cache.CacheProviderExtensions.GetCacheItem(ICacheProvider provider, String cacheKey, Func`1 getCacheItem) +179
       Umbraco.Core.CacheHelper.GetCacheItem(String cacheKey, Func`1 getCacheItem) +188
       Umbraco.Core.Services.SectionService.GetSections() +97
       Umbraco.Core.Services.SectionService.GetByAlias(String appAlias) +95
       umbraco.BusinessLogic.<>c__DisplayClass5.<ApplicationStarted>b__1(ApplicationAttribute x) +96
       System.Linq.WhereEnumerableIterator`1.MoveNext() +139
       System.Linq.Buffer`1..ctor(IEnumerable`1 source) +216
       System.Linq.Enumerable.ToArray(IEnumerable`1 source) +77
       umbraco.BusinessLogic.ApplicationRegistrar.ApplicationStarted(UmbracoApplicationBase umbracoApplication, ApplicationContext applicationContext) +285
       Umbraco.Core.ApplicationEventHandler.OnApplicationStarted(UmbracoApplicationBase umbracoApplication, ApplicationContext applicationContext) +62
       Umbraco.Core.CoreBootManager.<Complete>b__5(IApplicationEventHandler x) +79
       Umbraco.Core.EnumerableExtensions.ForEach(IEnumerable`1 items, Action`1 action) +204
       Umbraco.Core.CoreBootManager.Complete(Action`1 afterComplete) +185
       Umbraco.Web.WebBootManager.Complete(Action`1 afterComplete) +74
       Umbraco.Core.UmbracoApplicationBase.StartApplication(Object sender, EventArgs e) +241
       Umbraco.Core.UmbracoApplicationBase.Application_Start(Object sender, EventArgs e) +40
    
    [HttpException (0x80004005): Root element is missing.]
       System.Web.HttpApplicationFactory.EnsureAppStartCalledForIntegratedMode(HttpContext context, HttpApplication app) +9905705
       System.Web.HttpApplication.RegisterEventSubscriptionsWithIIS(IntPtr appContext, HttpContext context, MethodInfo[] handlers) +118
       System.Web.HttpApplication.InitSpecial(HttpApplicationState state, MethodInfo[] handlers, IntPtr appContext, HttpContext context) +172
       System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext, HttpContext context) +336
       System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext) +296
    
    [HttpException (0x80004005): Root element is missing.]
       System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +9885060
       System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +101
       System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +254
  • Jan Skovgaard 11264 posts 23594 karma points MVP 9x admin c-trib
    May 07, 2014 @ 13:46
    Jan Skovgaard
    0

    Hi Anders

    Could it be your code that inflicts this error? Are you trying to read an XML file that is not well-formed perhaps?

    What happens if you uncomment your code?

    /Jan

  • Anders Schmidt 75 posts 206 karma points
    May 07, 2014 @ 13:54
    Anders Schmidt
    0

    Hi Jan

    Thanks for anwsering.

    Yes It could be my code :-) But. Quit sure I have tried everything regarding my code. Tried to delete all folders + content inside App_Plugins. that schould do it right?

    I am not trying to read any XML. 

    I am not able of getting Umbraco Backend. And not able of displaying site. Always this error.

  • Jan Skovgaard 11264 posts 23594 karma points MVP 9x admin c-trib
    May 07, 2014 @ 13:58
    Jan Skovgaard
    0

    Hi Anders

    Hmm...that's odd.

    Ok...ehm...do you have debug="true" set in the web.config? (There is only one place to do it)...and if you try using the console log while refreshing your browser window (I'm asuming you're using Chrome) does that help anything? It might be a cache issue...

    However...if you go to the /app_data/umbraco.config file...does it then contain any XML?

    /Jan

  • Anders Schmidt 75 posts 206 karma points
    May 07, 2014 @ 14:11
    Anders Schmidt
    0

    Hi Jan

    debug is set to true.

    Chrome console log is giving a quick error. No chance to see it. Firefox gives:  [HTTP/1.1 500 Internal Server Error 1999ms]

    My umbraco.config:

    <!DOCTYPE root[<!ELEMENT FacebookTabEditor ANY>

    <!ATTLIST FacebookTabEditor id ID #REQUIRED>

     

    <!ELEMENT facebookMainDataType ANY>

    <!ATTLIST facebookMainDataType id ID #REQUIRED>

    <!ELEMENT facebookTabError ANY>

    <!ATTLIST facebookTabError id ID #REQUIRED>

    <!ELEMENT facebookTabKonkurencer ANY>

    <!ATTLIST facebookTabKonkurencer id ID #REQUIRED>

    <!ELEMENT FotoKonkurrence ANY>

    <!ATTLIST FotoKonkurrence id ID #REQUIRED>

    <!ELEMENT umbHomePage ANY>

    <!ATTLIST umbHomePage id ID #REQUIRED>

    <!ELEMENT umbMaster ANY>

    <!ATTLIST umbMaster id ID #REQUIRED>

    <!ELEMENT umbNewsItem ANY>

    <!ATTLIST umbNewsItem id ID #REQUIRED>

    <!ELEMENT umbNewsOverview ANY>

    <!ATTLIST umbNewsOverview id ID #REQUIRED>

    <!ELEMENT SimpelFacebookTab ANY>

    <!ATTLIST SimpelFacebookTab id ID #REQUIRED>

    <!ELEMENT umbTextPage ANY>

    <!ATTLIST umbTextPage id ID #REQUIRED>

     

    ]>

    <root id="-1">

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        <title><![CDATA[Txt: A responsive starter kit for Umbraco]]></title>

        <facebookLink><![CDATA[http://facebook.com/Umbraco]]></facebookLink>

        <twitterLink><![CDATA[http://twitter.com/UmbracoProject]]></twitterLink>

        <rssLink><![CDATA[http://feeds.feedburner.com/umbracoblog]]></rssLink>

        <googleLink><![CDATA[https://google.com/+Umbraco]]></googleLink>

        <hideBanner>0</hideBanner>

        <bannerHeader><![CDATA[This is some text that needs to pop]]></bannerHeader>

        <bannerSubheader><![CDATA[It will lead to a call-to-action, just click the button...]]></bannerSubheader>

        <bannerLinkText><![CDATA[You know you want to click me]]></bannerLinkText>

        <bannerLink>1054</bannerLink>

        <bannerBackgroundImage><![CDATA[/media/SampleImages/1008/banner.jpg]]></bannerBackgroundImage>

        <aboutTitle><![CDATA[What's this about?]]></aboutTitle>

        <aboutText><![CDATA[<p>This is <a href="http://html5up.net/txt/">TXT</a>, a free site template designed by <a href="http://n33.co">n33</a> for <a href="http://html5up.net/">HTML5 UP</a>. It's built on the <a href="http://skeljs.org">skelJS</a> framework, uses well-thought out HTML5 and CSS3, and is fully responsive making it a great starting point for your own projects. And, like everything else we make, it's also free to use for pretty much any personal or commercial work under the <a href="http://html5up.net/license/">Creative Commons Attribution</a> license, so go ahead and use it – just don't forget to credit us!</p>]]></aboutText>

        <siteName><![CDATA[Umbraco Txt]]></siteName>

        <byline><![CDATA[A responsive starter kit for Umbraco]]></byline>

        <copyright><![CDATA[Umbraco]]></copyright>

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          <featuredPage>1</featuredPage>

          <image><![CDATA[/media/SampleImages/1063/pic01.jpg]]></image>

          <bodyText><![CDATA[<p>You've installed Umbraco and the "Txt" Starter Kit.</p>

    <p>Edit the text on the homepage and create a site structure by adding new texpages to your site. This is all done in the <strong>Content</strong> section.</p>

    <p>If you find the editing options provided by the Txt site too limited for you needs, simply add more properties to the page by going to the <strong>Settings</strong> section, expanding the <strong>Document Types</strong> item and adding new properties on the <strong>Generic Properties</strong> tab. You can find more information about <a href="http://umbraco.org/help-and-support/video-tutorials/introduction-to-umbraco/sitebuilder-introduction/document-types" title="About Umbraco Document Types">document types and properties</a> at the <a href="http://umbraco.com" title="The Umbraco Website">Umbraco website</a>.</p>

    <p>You'll probably want to personalize your site by changing the current design. This is also done in the <strong>Settings</strong> section, by editing the CSS styles and HTML templates. Umbraco uses master templates, so the main, common markup is placed in the <strong>Starterkit Master</strong> template, while the Homeage and Textpage have separate templates for their unique layouts. You can find more information about <a href="http://umbraco.org/help-and-support/video-tutorials/introduction-to-umbraco/sitebuilder-introduction/templates" title="Umbraco Templates and Stylesheets">templates and css</a> in umbraco at the umbraco website.</p>

    <p>Once you're happy with your site's design, you might want to add more functionality, such as maps, image galleries or forms. This is done by <a href="http://umbraco.org/help-and-support/video-tutorials/getting-started" title="Umbraco Modules">installing Umbraco modules</a>.</p>]]></bodyText>

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          <umbracoNaviHide>0</umbracoNaviHide>

          <featuredPage>1</featuredPage>

          <image><![CDATA[/media/SampleImages/1060/pic02.jpg]]></image>

          <bodyText><![CDATA[<p>The Txt Starter Kit only scratches the surface of what's possible with Umbraco. Below the Txt Starter Kit and its modules lies a great architecture that lets you implement whatever you need.</p>

    <p>With Umbraco you've finally got a solid, open and reliable platform for websites as basic as the Txt site, and Umbraco can be rapidly expanded to support multi-language websites, collaboration platforms and intra/extranets, to name just a few.</p>

    <p>Advanced functionality is created with Umbraco macros, built with Umbraco's award-winning .NET integration, including full support for any .NET User or Custom control and ASP.NET MVC. Create and integrate your own .NET macros in mere minutes with point and click simplicity. Simply copy your controls to the Umbraco website, go to the <strong>Developer</strong> section and create a new macro, selecting your control from the list.</p>

    <p>You can also use <a href="http://umbraco.org/help-and-support/video-tutorials/getting-started/working-with-webmatrix" title="Working with Razor">Microsoft's Razor</a> syntax to quickly add dynamic functionality to your site.</p>

    <p>We've also gathered the best community macros into a repository that's also accessed from the <strong>Developer</strong> section, in the <strong>Packages</strong> area. You can find more information <a href="http://umbraco.org/help-and-support/video-tutorials/introduction-to-umbraco/sitebuilder-introduction/what-are-macros" title="About creating Umbraco macros">about creating macros</a>, on the Umbraco website.</p>

    <p>The sky is the limit with Umbraco, and you have the benefit a friendly community, training, and guaranteed support. Find out how to <a href="http://umbraco.org/help-and-support" title="Get Umbraco Support">get help</a>.</p>]]></bodyText>

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          <umbracoNaviHide>0</umbracoNaviHide>

          <featuredPage>1</featuredPage>

          <image><![CDATA[/media/SampleImages/1061/pic04.jpg]]></image>

          <bodyText><![CDATA[<p>Umbraco modules encapsulate specific bits of advanced functionality that are easily added to your website.</p>

    <p>Once installed, Umbraco modules are open source and easy to customize if you want to modify the behavior for your specific needs.</p>

    <p>Because Umbraco modules are provided under the MIT license you are free to use and modify them any way you want, with no strings attached.</p>

    <p>To add Umbraco modules to your website, go to the <strong>Settings</strong> section, expand the <strong>Templates</strong> item, select the <strong>Starterkit Master</strong> template, then click the <strong>Customize Skin</strong> button on the toolbar.</p>

    <p>Umbraco modules are available for various kinds of navigation, a sitemap, social media feeds, and a contact form. The list of available Umbraco modules is growing rapidly and is automatically updated from a central source, always fresh and current.</p>

    <p><a href="http://umbraco.org/get-started" title="Get Started with Umbraco">Get more information</a> about the umbraco way.</p>]]></bodyText>

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          <image><![CDATA[/media/SampleImages/1001/pic03.jpg]]></image>

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    <p>Now that you know what the Txt Starter Kit is, it is time to get started using Umbraco.</p>]]></bodyText>

        </umbTextPage>

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    <p>Ita redarguitur ipse a sese, convincunturque scripta eius probitate ipsius ac moribus. Istam voluptatem, inquit, Epicurus ignorat? Sed venio ad inconstantiae crimen, ne saepius dicas me aberrare; Sic, et quidem diligentius saepiusque ista loquemur inter nos agemusque communiter. Primum in nostrane potestate est, quid meminerimus? Consequens enim est et post oritur, ut dixi. Hoc mihi cum tuo fratre convenit. Immo videri fortasse. Itaque in rebus minime obscuris non multus est apud eos disserendi labor. Aliud igitur esse censet gaudere, aliud non dolere.</p>]]></bodyText>

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            <subheader><![CDATA[In all it's MVC Views goodness]]></subheader>

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        <FotoKonkurrence id="1110" key="ad52ad79-4a50-4712-aebf-f772281d6655" parentID="1088" level="2" creatorID="0" sortOrder="1" createDate="2014-04-25T18:36:39" updateDate="2014-04-25T18:36:39" nodeName="Foto-Konkurrence" urlName="foto-konkurrence" path="-1,1088,1110" isDoc="" nodeType="1106" creatorName="Anders" writerName="Anders" writerID="0" template="1105" nodeTypeAlias="FotoKonkurrence">

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          <fbAppId><![CDATA[PhotoContestFacebookConsumer]]></fbAppId>

        </FotoKonkurrence>

      </facebookMainDataType>

      <facebookMainDataType id="1086" key="3eb25f45-be5e-4139-80e0-baff4b3f9197" parentID="-1" level="1" creatorID="0" sortOrder="2" createDate="2014-04-24T21:34:49" updateDate="2014-04-29T22:41:41" nodeName="(YapJum) Facebook Administration" urlName="yapjum-facebook-administration" path="-1,1086" isDoc="" nodeType="1083" creatorName="Anders" writerName="Anders" writerID="0" template="0" nodeTypeAlias="facebookMainDataType">

        <facebookID><![CDATA[227925004036299]]></facebookID>

        <SimpelFacebookTab id="1092" key="343ddef9-d907-4010-bb24-055c315d7bac" parentID="1086" level="2" creatorID="0" sortOrder="1" createDate="2014-04-24T23:25:09" updateDate="2014-04-29T23:15:10" nodeName="simpleTab" urlName="simpletab" path="-1,1086,1092" isDoc="" nodeType="1091" creatorName="Anders" writerName="Anders" writerID="0" template="1084" nodeTypeAlias="SimpelFacebookTab">

          <f><![CDATA[FacebookConsumer]]></f>

          <bodyTextNoFan><![CDATA[<p>Dette er teksten for brugere der ikke er fans</p>]]></bodyTextNoFan>

          <bodyTextFan><![CDATA[<p><iframe src="https://www.forberedelsesskolen.skoleintra.dk/Infoweb/DynamiskeSider/Klasseskemaer.asp?Action=2" style="width: 800px; height: 4000px; overflow: hidden; border: none;"></iframe></p>]]></bodyTextFan>

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          <fbAppId><![CDATA[PhotoContestFacebookConsumer]]></fbAppId>

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        <editFacebookTab><![CDATA[<p>bombom. Det virker fandme...</p>]]></editFacebookTab>

      </FacebookTabEditor>

    </root>

  • Jan Skovgaard 11264 posts 23594 karma points MVP 9x admin c-trib
    May 07, 2014 @ 14:33
    Jan Skovgaard
    0

    Hi Anders

    That's really weird - Have you checked the /app_data/logs file to see if it reveals some more information? Are there any entries tagged with error?

    /Jan

  • Anders Schmidt 75 posts 206 karma points
    May 07, 2014 @ 14:47
    Anders Schmidt
    0

    Hi Jan

    This error occurs on UmbracoTraceLog:

    2014-05-07 11:57:55,652 [49] ERROR Umbraco.Core.UmbracoApplicationBase - [Thread 51] An unhandled exception occurred

    2014-05-07 13:59:25,023 [7] ERROR Umbraco.Core.UmbracoApplicationBase - [Thread 1] An unhandled exception occurred

    2014-05-07 13:59:25,023 [7] ERROR Umbraco.Core.UmbracoApplicationBase - [Thread 1] An unhandled exception occurred

    I appreciate your patience and help. This is a test site so I will try to move content to another solution not to waist yours and my time :-) If you think this is a "one hit wonder" and there still is a possibility of I had made a mistake :-/

     

  • Jan Skovgaard 11264 posts 23594 karma points MVP 9x admin c-trib
    May 07, 2014 @ 15:42
    Jan Skovgaard
    0

    Hi Anders

    I agree - if it's an option to start out fresh then by all means do so.

    But just wondering what could have triggered it...perhaps you could also try some final things before moving on.

    1: Go to the /app_data/TEMP/ClientDependency folder and delete all the files 2: Go to /config/ClientDependency.config and increment the version number 3: Recycle the app pool

    Does that work?

    If not...try deleting the indexes from /app_data/TEMP/Examine as well - only delete the files, not the folders and then recycle.

    If none of the above approaches work then start fresh :)

    /Jan

  • Anders Schmidt 75 posts 206 karma points
    May 07, 2014 @ 22:58
    Anders Schmidt
    0

    Hi Jan

    your fixes didn't help me out.

    Thanks for helping me out. 

    When you say: recycle app pool you mean: touch web.config and rebuild solution. Right?

    And a last question.

    Is there any chance using Umbraco.sdf database will effect this issue. You think?

    THANKS

  • Jan Skovgaard 11264 posts 23594 karma points MVP 9x admin c-trib
    May 07, 2014 @ 23:22
    Jan Skovgaard
    0

    Hi Anders

    You're welcome - It bothers me we can't figure this one out though :)

    Yup, touching the web.config, rebuilding the solution or simply recycling the app pool on the server (IIS).

    I'm not sure but perhaps - there is a weird issue that the database sometimes does not save changes when using iisexpress with ce sql.

    Hope this helps.

    /Jan

  • Joel Hansen 38 posts 96 karma points
    Sep 09, 2014 @ 13:52
    Joel Hansen
    0

    Hello Jan and Anders

    Did you find a solution to this? A client site running Umbraco 7 just did the same to us. Suddenly, it just throws the error "Root element is missing", not allowing us to even enter the Umbraco backend.

    Doing the whole site all over is really the last resort. We need to get to the bottom of this.

    I hope you can help.

    Kind regards

    Joel

  • Joel Hansen 38 posts 96 karma points
    Sep 09, 2014 @ 15:51
    Joel Hansen
    2

    All right, we found the problem.

    The /config/applications.config had been wiped clean. In case you experience the "root element is missing" error, I'd recommend you to check the files in the /config folder and make sure they're not empty.

    I do find it strange the files can go empty. Why would Umbraco empty any config file just like that? That has to be a bug!

    / Joel

  • Luke 1 post 21 karma points
    Nov 25, 2014 @ 17:07
    Luke
    0

    This error just occured for us, causing our site to go down and also the umbraco backend.

    What happened was the applications.config suddenly was empty like Joel mentioned. Someone had been entering content into the backend at the time.

    This is quite a serious bug, please fix it.

  • Matthew 138 posts 201 karma points
    Nov 25, 2014 @ 21:24
    Matthew
    0

    Hmmm, my personal site has been down for a few days, just getting around to working on it and found this thread. It's hosted on an Azure website, was running fine, then wasn't.

    The live site does this...:

    Server Error in '/' Application.
    
    Runtime Error 
    
      Description: An application error occurred on the server. ...
    

    Can anyone offer a pointer? A reference how to go about troubleshooting a stack trace?

    Thanks much.

  • Matthew 138 posts 201 karma points
    Nov 25, 2014 @ 22:05
    Matthew
    0

    Ah, went through all the files in config and found the trees.config file was blank. Copied the contents from another site's backup copy and the local version is back running. Going to test this solution on the live site now....

  • Matthew 138 posts 201 karma points
    Nov 25, 2014 @ 22:09
    Matthew
    0

    Yep, worked, actually using the contents of a trees.config from a 7.2 beta install (just for curiosity, didn't compare first, should prolly do that).

    Thanks Joel

  • Nicholas Westby 2045 posts 7034 karma points c-trib
    Nov 25, 2014 @ 22:11
    Nicholas Westby
    0

    FYI, the issue with applications.config and trees.config being emptied should be fixed soon (in Umbraco 7.1.9): http://issues.umbraco.org/issue/U4-5126

  • Matthew 138 posts 201 karma points
    Nov 25, 2014 @ 22:46
    Matthew
    0

    Thanks Nicholas. I was hoping to jump straight into 7.2, as soon as it's ready. Since those Europeans won't be celebrating Thanksgiving or wasting time shopping on Black Friday, I assume they'll have all the rest of this week and weekend to finish it up.

    What might the dangers be for pasting the contents of another trees.config into the emptied one? Didn't know it was being written to a lot. I've stopped and restarted the Azure website, seems to work fine. The site is pretty basic, would it matter if it was more complex?

  • Nicholas Westby 2045 posts 7034 karma points c-trib
    Nov 25, 2014 @ 22:52
    Nicholas Westby
    0

    Not really sure what the dangers are, but I think the applications.config and trees.config are in some way related to the sections (Content, Settings, Developer, etc.) and trees shown in those sections. I'm guessing the worst case would be that you might lose access to some of those sections/trees.

    And yeah, hopefully they release 7.2 soon. I want to tinker with it myself.

  • Proxicode 123 posts 309 karma points
    Aug 13, 2015 @ 18:31
    Proxicode
    0

    Thanks Matthew - SO glad I found this post. I was chasing this for hours. So in my case the FileSystemProviders.config was wiped clean. I can't rule out 100% that it was me who did it, although why would I?

    But in case this is still an issue out there, apparently it does effect the FileSystemProviders.config as well.

    The symptoms in my case were the following ...for every image in the Media folder I would see a 500 error in the debugger.
    For example:

    umbraco/backoffice/UmbracoApi/Images/GetBigThumbnail/mycustomImagePath.jpg     500
    

    The website itself could render the images just fine, but the media folder just had placeholders where the images would normally be.

    Thanks again to this awesome community for helping me with something I would have surely spent days trying to find.

    Thanks

    -Roger

  • Jason Prothero 421 posts 1242 karma points c-trib
    Sep 15, 2015 @ 15:48
    Jason Prothero
    0

    I had this issue as well with the same symptom (trees.config empty). It turned out that the disk was full. Apparently Umbraco must write to trees.config during startup and if there's no space then it is empty.

  • Stephen 94 posts 255 karma points
    Nov 16, 2015 @ 11:19
    Stephen
    0

    Had the same problem after a rogue app gobbled all my server disc space up.

    Turn out to be an empty config file. Replaced it, problems fixed.

    It was the trees config file.

    Thanks for tips guys, got me out of a hole.

    It actually killed two of my sites, both the same config file.

  • Bart 2 posts 22 karma points
    Sep 07, 2017 @ 07:36
    Bart
    0

    We had the same issue in our project. We found out that for some reason the application.config was empty. Replacing the content from development fixes the issue for now.

    There is a bug reported: http://issues.umbraco.org/issue/U4-5126 And upgrading to 7.1.9+ should fix the problem. Havent tested this yet AND not sure how to reproduce the issue.

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