Error in online demos

3 posts, 1 answers
  1. hwsoderlund
    hwsoderlund avatar
    419 posts
    Member since:
    Aug 2006

    Posted 26 Apr 2010 Link to this post

    Hi, I am trying to run the new demos at, but all I am getting is a white page and a javascript error in IE. In FireFox I get nothing, not even an error message. See the error from IE 8 below. I am running Silverlight 4.0.50303.0.

    By the way, the new demos look excellent (they work fine on my collegues machines).

    Webpage error details

    User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.2; OfficeLiveConnector.1.4; OfficeLivePatch.1.3; .NET4.0C; .NET4.0E; Creative AutoUpdate v1.40.01)
    Timestamp: Mon, 26 Apr 2010 15:37:01 UTC

    Message: Unhandled Error in Silverlight Application
    Code: 4004    
    Category: ManagedRuntimeError       
    Message: System.TypeLoadException: Could not load type 'System.Action' from assembly 'mscorlib, Version=, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.
       at Telerik.Windows.Examples.App.Application_UnhandledException(Object sender, ApplicationUnhandledExceptionEventArgs e)
       at MS.Internal.Error.CallApplicationUEHandler(Exception e)
       at MS.Internal.Error.GetXresultForUserException(Exception ex)     

    Line: 62
    Char: 13
    Code: 0

  2. Answer
    Valeri Hristov
    Valeri Hristov avatar
    2252 posts

    Posted 26 Apr 2010 Link to this post

    Hi Henrik,

    If I am correct, you are using the RC version of Silverlight 4 (I can't remember what was its runtime version), which most probably is the reason for the problem. I would recommend upgrading to the RTW Silverlight 4 (version 4.0.50401.0) and then clearing the browsers cache. Some of our colleagues had the same problem and it was "cured" after installing the new Silverlight and several cache clears.

    All the best,
    Valeri Hristov
    the Telerik team

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  4. hwsoderlund
    hwsoderlund avatar
    419 posts
    Member since:
    Aug 2006

    Posted 27 Apr 2010 Link to this post

    Yes, that was it. It is strange that it has not upgraded automatically. I have always had Silverlight set to "update automatically" and it has never been a problem before. Oh well, it works fine now. Thanks, /Henrik
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