We are getting this error and using Telerik dlls from GAC. If I go to design mode in .aspx webform and I see the controls but on the page it throws this error.
Error:
http://screencast.com/t/ldNrMHAg
Web.config:
http://screencast.com/t/vIB40g9zxn
http://screencast.com/t/vIB40g9zxn
http://screencast.com/t/t6vqlpTWQv
Error:
http://screencast.com/t/ldNrMHAg
Web.config:
http://screencast.com/t/vIB40g9zxn
http://screencast.com/t/vIB40g9zxn
http://screencast.com/t/t6vqlpTWQv