Thanks. I believe I have the probing, etc. correct, however when I try the user control example I get the following error:
System.Web.HttpParseException: Could not load file or assembly 'Telerik.Web.UI, Version=2010.1.519.35' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference.
I created a Telerik subdirectory under the bin directory, and put the 2010.1.519.35 DLL there. I have the 2009.2.826.35 DLL in the root of the bin directory. I put this probing element in web.config:
Do I need to somehow have references to both versions in the project? I can't see a way to add 2 references with the same name.
I'll bet this has something to do with my problem: I'm not using Sitefinity, and I just realized that this was a Sitefinity-specific forum. :) However, do you know if this method is possible in my case (I'm just using the Telerik DLLs in a plain old web application, and I want to use different versions between different controls)?