RadScriptManager unable to load System.Windows

[Andy Grauch]

Hello,

In my web application, I have a master page with a RadScriptManager control.  I'm getting the following error on page load:

Could not load file or assembly 'System.Windows,Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e' orone of its dependencies. The system cannot find the file specified.

Based on the stack trace, the error appears to be thrown from the RadScriptManager constructor:

[FileNotFoundException: Could not load file or assembly 'System.Windows, Version=2.0.5.0, Culture=neutral,

PublicKeyToken=7cec85d7bea7798e' or one of its dependencies. The system cannot find the file specified.]

   System.ModuleHandle.ResolveType(RuntimeModule module, Int32 typeToken, IntPtr* typeInstArgs, Int32 

   	typeInstCount, IntPtr* methodInstArgs, Int32 methodInstCount, ObjectHandleOnStack type) +0 

   System.ModuleHandle.ResolveTypeHandleInternal(RuntimeModule module, Int32 typeToken, RuntimeTypeHandle[] 

   	typeInstantiationContext, RuntimeTypeHandle[] methodInstantiationContext) +180   

   System.Reflection.RuntimeModule.ResolveType(Int32 metadataToken, Type[] genericTypeArguments, Type[] 

	genericMethodArguments) +192   System.Reflection.CustomAttribute.FilterCustomAttributeRecord(CustomAttributeRecord 

	caRecord, MetadataImport scope, Assembly& lastAptcaOkAssembly, RuntimeModule decoratedModule, 

	MetadataToken decoratedToken, RuntimeType attributeFilterType, Boolean mustBeInheritable, Object[]

	attributes, IList derivedAttributes, RuntimeType& attributeType, IRuntimeMethodInfo& ctor, Boolean&

	ctorHasParameters, Boolean& isVarArg) +115   

   System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeModule decoratedModule, Int32 decoratedMetadataToken, 

	Int32 pcaCount, RuntimeType attributeFilterType, Boolean mustBeInheritable, IList derivedAttributes, Boolean 

	isDecoratedTargetSecurityTransparent) +426   System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeAssembly

	assembly, RuntimeType caType) +103   

   System.Reflection.RuntimeAssembly.GetCustomAttributes(Boolean inherit) +33   

   System.Web.UI.AssemblyCache.GetAjaxFrameworkAssemblyAttribute(Assembly assembly) +76   

   System.Web.UI.ScriptManager.get_DefaultAjaxFrameworkAssembly() +388   

   System.Web.UI.ScriptManager..ctor() +26   

   Telerik.Web.UI.RadScriptManager..ctor() +14

The error only occurs the first time I load a page after a build of the application.  As soon as I refresh the page, the error goes away and the application functions as expect.

The error started occurring as soon as I added a Silverlight 3 application in my web app project.

Why are RadScriptManager and the .NET ScriptManager attempting to load a Silverlight dll?  Obviously, this dll is not in the bin directory of the web app.  Any ideas as to how I can make this error go away?

I'm using VS 2010, .NET 4.0, Silverlight 3, and Telerik RadControls for ASP.NET Ajax version 2010.1.415.40.

Thanks,

Andy

[T. Tsonev]

Hi Andy Grauch,

That's an interesting problem indeed. Try replacing RadScriptManager with ScriptManager. This will let us know if the problem is in the base implementation or in our code. If it turns out to be in our code then we'll appreciate a sample project that we can debug locally.

I hope this helps.

Best wishes,
Tsvetomir Tsonev
the Telerik team

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[Andy Grauch]

Thanks for the suggestion.  However, the problem seems to have resolved itself.   The "fix" was to delete my solution and fetch a fresh copy from source control.  For whatever reason, I can rebuild this new copy without seeing the error.  I have not been able to reproduce the error when building and deploying the application to test and staging servers.  Must have been something local to my development environment.

Andy

[Ed Davis]

I had this same issue pop with when I added silverlight 4, but only after adding a silverlight class library did it start happening.

I replaced the radscriptmanager with the base scriptmanager and still got the error.

I'm trying to recreate the solution file now to see if this resolves my issue as well.

Edit:
Still no luck with this.
I removed system.windows.controls , system.windows.controls.data.input, system.windows.controls.navigation
dll's from the bin directory and rebuilt the solution so they would be regenerated which they were. Still have the error, so my current build can't be put into production until this can be resolved.

[Simon]

Hi Ed Davis,

This can be a problem with your GAC.

First, please try try uninstalling and then installing Silverlight again to see if it fixes it.

If it does not, please paste here the stack trace of the exception in case it contains information that may lead us to the root cause.

Kind regards,
Simon
the Telerik team