Hi,

I'm currently trying to upgrade a web application that is already using telerik asp.net ajax controls with a 2009 version.

The application is working on IE9 with IE7 compatibility mode activited in the web.config file.

The thing is that when i'm trying to upgrade that version to the 2012 Q3 version for each pages that i'm having RadTabStrip or RadMenu on top of the pages, the following items aren't rendered correctly. When i remove one of the controls my page is rendered correctly after that.

Is there any change with the style stuff since the 2009 version or other thing that I should be looking at that might help?

Also in some case the WebResource.axd is not visible to the apllied style of any following controls (controls after RadMenu and/or RadTabStrip), but after removing the control from the pages all the WebResource style are applying correctly.

Thx for your help,

Guillaume

Hi Guillaume,

In general we have implemented many changes to the controls since the 2009 version (especially changes related to the design and skins). Therefore it is expected that you encounter issue. Unfortunately there is not a summary list with all changes but you can check the release notes (at the end of the page) ordered by date here.  

My best suggestion would be to open a support ticket where you can attach a simplified runnable project demonstrating the issue that you encounter, so we can inspect it locally and help you out in the most efficient way.

Greetings,
Kate
the Telerik team