Hi Webspas

I think this is a bug, which has been resolved with 4.6.1 so I urge you to upgrade your installation.

Hope this helps.

/Jan

Thank you Jan.

I hope so to. I will try to do this and I'll let you know if it works - or not. :-)

Thanks again.

Actually I have made a little modification in how I setup my page, so I don't really need to inherit something at the time... So I may just keep it as it is for now.

I have 4.6.1 and still have this problem.

If one doctype has a control on an inherited tab, then only that doctype works.

If 2 or more doctypes use inherited tabs, then all nodes crash with following error.

[NullReferenceException: Object reference not set to an instance of an object.]
   umbraco.controls.ContentControl.addControlNew(Property p, TabPage tp, String Caption) +257
   umbraco.controls.ContentControl.CreateChildControls() +938
   System.Web.UI.Control.EnsureChildControls() +102
   umbraco.controls.ContentControl.OnInit(EventArgs e) +92
   System.Web.UI.Control.InitRecursive(Control namingContainer) +140
   System.Web.UI.Control.AddedControl(Control control, Int32 index) +197
   System.Web.UI.ControlCollection.Add(Control child) +79
   umbraco.cms.presentation.editContent.OnInit(EventArgs e) +1459
   System.Web.UI.Control.InitRecursive(Control namingContainer) +140
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +480

I am having the exact same problem as Daniel on 4.6.1. Does anyone know what the cause is our a workaround? 

Hi Will

Unfortunately I don't know of any workaround for this I have just checked codeplex to see if there has been created a work item for this issue but I have not been able to find one. Since I have not played around enought with 4.6.1 yet I'm not sure how to reproduce this...

So would you perhaps add this possible bug to codeplex so the core team can be noticed about this? Please post the work item in here for future rerence to others who experience this issue.

Cheers.

/Jan

Looking through the logs, there is another error just above the one I'm seeing in the CMS 

Error adding stylesheet to tinymce (id: 1049). 

System.ArgumentException: No node exists with id '1049'     

at umbraco.cms.businesslogic.CMSNode.setupNode()    

 at umbraco.cms.businesslogic.web.StyleSheet..ctor(Int32 id)     

at umbraco.editorControls.tinyMCE3.TinyMCE..ctor(IData Data, String Configuration)

So possibly the two are related? 1049 was originally my Home Page, but I deleted it and recreated a new one.

Added to CodePlex 

http://umbraco.codeplex.com/workitem/29992

Hi,

I also voted for that. That happens when you add a new property within a tab from the master document type.

Cheers, Giorgos

Hi guys

If it's an option for you it's possible to get this fixed by installing the nightly build.

Just copy over these folders and you should get rid of the problem - I've done it with succes on a minor install earlier this week.

/bin
/install
/umbraco
/umbraco_client

/Jan

As Jan recommends, installing a nightly did fix the problem but introduced new ones:

Parser Error Message: This method cannot be called during the application's pre-start initialization stage.

This is a MV3 upgrade issues, add these two keys to your web.config and all will work again.

      <add key="enableSimpleMembership" value="false"/>

      <add key="autoFormsAuthentication" value="false"/>

Source: http://stackoverflow.com/questions/4626647/asp-net-this-method-cannot-be-called-during-the-applications-pre-start-initiali

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