No such property registered - winforms

[Alex]

I have RadControls for WindowsForms 8.1.0.0 installed on my Vista x64 machine.  I recently upgraded RadControls for ASP.Net from Q1 2008 to Q2 2009.  After the upgrade, with a little work, I got my ASP.net projects working wonderfully and was fired up.  However, I went in to do a little work on a win forms project, and I started getting a "No such property registered" error when opening the designer.  Looking through the forums, I found that other users experienced this when upgrading their win forms controls.  It seems that my case is slightly different in that the conflict is occuring on Telerik.VSX.Controls in my GAC, which was put there by the ASP.Net controls.  I can't uninstall it from the GAC becuase the installer has it protected.  If I do a full uninstall of the ASP.net controls, the winforms projects work fine.  Any ideas?

Thanks,
Alex Johnson

[Nick]

Hi Alex,

Please uninstall the release of RadControls for WinForms that you are using currently, then remove all our WinForms assemblies from the GAC, and then install the latest release of RadControl for WinForms. This should fix the issue.

All the best,
Nick
the Telerik team

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[Alex]

Hello Nick,

Thanks for the response.  I think we're going to roll back the ASP.Net controls for now, and then upgrade both the ASP.Net controls and the Winforms controls when Q3 comes out in 2010. 

Thanks again,
Alex Johnson