Failed to create designer

6 posts, 0 answers
  1. Scott
    Scott avatar
    43 posts
    Member since:
    Nov 2007

    Posted 06 Dec 2007 Link to this post

    I just upgraded all my RadSplitters/RanPanes to the latest Prometheus version.  I did this by removing the old dll and adding in the new one.  All of the controls show "Failed to create designer "Telerik.Web.UI.RadSplitter, Telerik.Web.UI, Version=2007.2.1107.0......." in designer view. 

    I am using the hotfix versions of the controls.  Do you know what might be happening?

    Scott
  2. Tsvetie
    Admin
    Tsvetie avatar
    1517 posts

    Posted 07 Dec 2007 Link to this post

    Hello Scott,
    The code for our controls in design view is in the Telerik.Web.Design.dll. Just add a reference to that DLL and the problem should disappear.

    Sincerely yours,
    Tsvetie
    the Telerik team

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  3. Scott
    Scott avatar
    43 posts
    Member since:
    Nov 2007

    Posted 07 Dec 2007 Link to this post

    That fixed it!  Thanks.
  4. jonnyO
    jonnyO avatar
    53 posts
    Member since:
    Jan 2004

    Posted 17 Mar 2009 Link to this post

    I have this problem with 2009.1.311.20.  I tried using GAC and not, installed VS2008 SP1 and still no luck.
    Any ideas?
    Thanks
    John
  5. Svetlina Anati
    Admin
    Svetlina Anati avatar
    2795 posts

    Posted 18 Mar 2009 Link to this post

    Hello John,

    Make sure that you have the same assembly version referenced in the Web.config, in the Bin folder and in the GAC. You should have all the same assembly everywhere and also it is better if you have the fully qualified name in the Web.config references. If you have all this ensured, you should not experience problems with the designer.


    Best wishes,
    Svetlina
    the Telerik team


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  6. jonnyO
    jonnyO avatar
    53 posts
    Member since:
    Jan 2004

    Posted 18 Mar 2009 Link to this post

    Thanks
    Atanas http://blogs.telerik.com/AtanasKorchev/Posts/09-03-06/Meet_Telerik_Web_Design_dll.aspx lead me in my search.  I found Telerik.Web.Design ...20 and ...35 in C:\WINDOWS\assembly.  Couldn't uninstall these assemblies until 2009.1.311 .exe was removed.  After scrubbing the new install and removing both Design assemblies from the assembly folder I manually set ...35 in the GAC and Telerik.Web.UI in my project Bin.  All is good.
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