Are you using any custom .xslt files or just the standard Umbraco ones? Also which version of Umbraco are you running?

I'm using version 4.9.0 and I'm using the built in \xslt\umbTopNavigation.xslt, \xslt\umb2ndLevelNavigation.xslt that are breaking as well as 1 custom file.

Check out this thread, may help.

http://our.umbraco.org/forum/getting-started/installing-umbraco/22985-More-47-upgrade-problems

*Try removing the umbraco.standardformhandlers dll from the bin folder*

Thank you for the suggestion.  I verified I don't have that umbraco.standardformhandlers.dll as well as any of the following: 

a.       Iron*.dll (= all DLLs starting with iron)

b.      Microsoft.Scripting*.dll

c.       Microsoft.Dynamic.dll

d.      umbraco.macroEngines.legacy.dll

e.      RazorEngine.Core.dll

f.        RazorEngine.Templates.dll

g.       VistaDB*.dll

I've added ?umbdebugshowtrace=true to the end of my URL and I'm not seeing any more information.  In my web.config I updated to the following, hoping this would allow me to see my errors,but I still don't.  Any ideas on how I could get better look at the error in attempts to find the root cause?

Thanks!

OK,

Maybe it's this:

http://our.umbraco.org/forum/getting-started/installing-umbraco/34541-Can%27t-create-new-XSLT-files-after-upgrading-from-48-to-49

Do you have any additional or custom dlls you are using? Can you take a fresh download of 4.9 and put the dlls in the bin folder and replace the current ones (backup what you have first though)

Thanks:

Matt

Thank you for your suggestion.  I took a look at the link and that's the same error message I'm getting.  However, their solution had to do with them adding their own dlls to the bin, which I hadn't done. I downloaded Umbraco 4.9 again, removed all my files from the bin folder and pushed the bin contents of the new one up.  I got an error, which I had forgotten I was getting before.  Before I think I had just removed that dll and then I was able to see the site but had the xslt issue.  So I'll bet this is related to the issue.  I'll chase this path for a while, but anybody that knows a solution to this, I'd gladly take it :) Thanks!

Server Error in '/' Application.

Could not load file or assembly 'System.Web.Helpers' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

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.IO.FileLoadException: Could not load file or assembly 'System.Web.Helpers' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

Source Error: 

Assembly Load Trace: The following information can be helpful to determine why the assembly 'System.Web.Helpers' could not be loaded.

WRN: Assembly binding logging is turned OFF.
To enable assembly bind failure logging, set the registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1.
Note: There is some performance penalty associated with assembly bind failure logging.
To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fusion!EnableLog].

Stack Trace: 

[FileLoadException: Could not load file or assembly 'System.Web.Helpers' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)]

[FileLoadException: Could not load file or assembly 'System.Web.Helpers, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)]
   System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) +0
   System.Reflection.RuntimeAssembly.nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) +34
   System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName assemblyRef, Evidence assemblySecurity, RuntimeAssembly reqAssembly, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) +152
   System.Reflection.RuntimeAssembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean forIntrospection) +77
   System.Reflection.RuntimeAssembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection) +16
   System.Reflection.Assembly.Load(String assemblyString) +28
   System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +38

[ConfigurationErrorsException: Could not load file or assembly 'System.Web.Helpers, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)]
   System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +752
   System.Web.Configuration.CompilationSection.LoadAllAssembliesFromAppDomainBinDirectory() +218
   System.Web.Configuration.CompilationSection.LoadAssembly(AssemblyInfo ai) +130
   System.Web.Compilation.BuildManager.GetReferencedAssemblies(CompilationSection compConfig) +170
   System.Web.Compilation.BuildManager.GetPreStartInitMethodsFromReferencedAssemblies() +91
   System.Web.Compilation.BuildManager.CallPreStartInitMethods(String preStartInitListPath) +258
   System.Web.Compilation.BuildManager.ExecutePreAppStart() +135
   System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager appManager, IApplicationHost appHost, IConfigMapPathFactory configMapPathFactory, HostingEnvironmentParameters hostingParameters, PolicyLevel policyLevel, Exception appDomainCreationException) +516

[HttpException (0x80004005): Could not load file or assembly 'System.Web.Helpers, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)]
   System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +9873912
   System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +101
   System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +254

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.17929

Hi Hilary

Is this website based on a clean installation of Umbraco 4.9 or did you start having issues after an upgrade? If so do you by any chance use uComponents?

/Jan

Hi Jan,

It is a fresh install.  What I did was installed it locally and built the site that way.  Then I pushed it up to the server.  I cleared all the files and pushed it up fresh and now I'm not getting the last error I posted regarding System.Web.Helpers, the site will display but the xslts still all won't parse and this is what I see when I try to save an xslt file via Umbraco:

Error occured

System.NullReferenceException: Object reference not set to an instance of an object. 
at umbraco.macro.GetXsltExtensionsImpl() 
at umbraco.macro.b__0() 
at umbraco.cms.businesslogic.cache.Cache.GetCacheItem[TT](String cacheKey, Object syncLock, CacheItemPriority priority, CacheItemRemovedCallback refreshAction, CacheDependency cacheDependency, TimeSpan timeout, GetCacheItemDelegate`1 getCacheItem) 
at umbraco.macro.GetXsltExtensions() 
at umbraco.macro.AddMacroXsltExtensions() 
at umbraco.presentation.webservices.codeEditorSave.SaveXslt(String fileName, String oldName, String fileContents, Boolean ignoreDebugging)

One thing I should note is in my local installation the file structure varies a bit from the server.  The packages folder is placed within the root of the application on the server whereas it's outside locally:

Would it help to start with a fresh Umbraco, run the setup installation on the server and then copy my database and files over?   

Hi Hilary

I'm a bit puzzled why you have placed the packages folder outside of the Umbraco root folder locally?

However have you checked that the proper permissions have been set for the iusr and network service user on the root folder containing Umbraco?

If so have you then also made sure that if you have any custom XSLT extensions that you have also copied the xsltExtensions.config file to the live server where the extensions have been defined?

That's 2 of the things that comes to mind when reading your post above.

Hope this helps.

/Jan

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