Problem with Telerik.Web.UI and designer

[Robert]

I am having a problem attempting to get into design mode of VS2005.  It keeps adding a reference to Telerik.Web.UI.Dll and takes roughly a minute before the designer finally opens.  I used to get an error stating "The file at /bin/Telerik.Web.UI.Dll already exists are you sure you want to update this reference" 

Any idea of what is goingon here and how to fix this?

[Andrey]

Hello Robert,

A dialog containing the message you are quoting can be seen while dragging a control from the Visual Studio Toolbox and dropping it onto your page.
It offers you an upgrade when the dragged toolbox control's version is different than the one you reference in your project. Regardless of your choice, it should not cause any issues.

To my regret, we have yet to meet a design-time issue like the one you describe. It would be most helpful if you helped me on the following questions:

• Can you reproduce the issue with a new website?
• Does the issue manifest in all of your projects?

All the best,
Andrey
the Telerik team

[Robert]

I have plenty of other projects that are fine and yes I can create a new project without error.  I can open other forms with Rad Controls in this project and the designer opens fine.

The bizarre thing is that it is specific to this web form.  AND the webform only contains a .Net label and a .Net GridView, NO Rad Controls at all!

[Robert]

Here is the error I am getting.  Note the status bar in VS2005.

http://picasaweb.google.com/lh/sredir?uname=RobertGayo&target=PHOTO&id=5527200365002482210&aid=5527199258386862689&authkey=Gv1sRgCMGR-7y6uuHPPQ&invite=CKWyhjQ&feat=email

[Robert]

It's bizarre that I experienced this problem on only 1 web form of the project. A web form that has no Telerik controls.  The other 100 forms in the project were fine.  Anyway I found that the solution to be a lack of the assembly in the GAC and also a missing assembly reference in Web.Config.  I added the assembly reference to the web.config and the problem went away.

That still does not explain why I had this problem on 1 web form and not the other 100 or any other web project!

[Andrey]

Hi Robert,

I am very glad to hear you are no longer experiencing the issue. We have definitely not met one like it.

If you could go ito some more detail on how you resolved your issue or possibly send us a small project in which you can reproduce the issue, we could try to reproduce the issue locally. That would greatly help us with identifying its cause.

Regards,
Andrey
the Telerik team