[Solved] Error Creating Control

[Doug]

I just downloaded the Q1 2009.  I uninstalled my eval and installed the Q1 2009.  I moved the appropriate DLLs to my project and referenced them.  My website runs fine but the design view is having problems finding RadComboboxes, RadSliders, RadGrids and RadDatePickers.  The RadTextboxes render fine.  I made sure to reference the new Telerik.Web.Design but to no avail.  I thought maybe there was some disconnect because of the split of design.dll (and still do) so I drag and dropped a control to see if this would right the wrong but the dropped control also had the error creating control.

The error reads: "Could not load file or assembly 'Telerik.Web.UI, Version=2009.1.311.35, Culture=...' or one of its dependencies..." Which tells me that it's looking in the wrong DLL it should be looking in Telerik.Web.Design.  I don't know how to tell it where to look though.  Are the RadTextBoxes still rendered (Design) from the Telerik.Web.UI?

Thanks,
Doug

[Joe]

I have the same issue, sort of....

On my Vista Business machine, I had the error. I removed the version number from the web.config and it solved the problem.

Now when I open Visual Studio on my laptop (running XP), I get the error creating control message.

Not sure what I need to do to resolve this.... I have the smae version of dll's on both machines.

Joe

[Chris]

I have a similar issue - or issues.  I get a message about not finding System.Web.Extensions when I try running the examples and if I try to put a splitter on a page and change a property Visual Studio crashes completely.

After having JUST fixed the fact that installation itself caused the .net framework to get corrupted (which Telerik have no posted a fix for) I'm facing these problems....PLEASE telerik, fix this latest release up, its totally undermining your credibility.

[Atanas Korchev]

Hello,

Those design time error may occur if you are using Visual Studio 2008 without service pack. Please check the last item from our troubleshooting section and this blog post for more info.

Regards,
Albert
the Telerik team

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[Joe]

I just upgraded my laptop to Visual Studio Service Pack 1 and I can confirm that the "error creating control" has been resolved.

Thanks!
Joe

[Doug]

VS SP1 fixed for me as well

Thanks,
Doug

[COLIN]

I was having a lot of problems with this and to solve it i had to use the DLL from the Bin35 directory and drag and drop it to C:\WINDOWS\assembly so it would be part of the GAC.
I had the wrong DLL registered prior to solving my issue.

[Ravinder]

Thanks for the information on this page. It was really helpful...