Thank you for contacting Telerik Support.
Probably the DLLs are not updated correctly. To test which version is applied please open a working page and view it source(right click on the page and view source) and search for "<!-- 2013". Here is how the mark of the Q3 looks like - <!-- 2013.3.1015.0 -->. Also check the DLLs in the bin folder.
I will be glad to assist you further.
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