Problem: Sitecore 6.5 Content Editor breaks with exception “ Could not load file or assembly 'Telerik.Web.UI, Version=...” My Troubleshooting Steps: 1. I searched via Visual Studio, Grepwin, etc. for the assembly settings with no results 2. Manually c hecked all config files for Telerik data, but didn't find anything useful 3. Checked all project files for Telerik settings, and didn't find anything 4. Tried adding the DLL references back again, which gave me the same error (this was the dll in question) 5. I cleaned and built all projects many times The Fix: I deleted all bin folders in every project, and then rebuilt the solution. PROBLEM SOLVED! What I learned: The Visual Studio "Clean" function doesn't delete all bin files like I thought. Normally, I would clean the project first and then ...