I am sorry to hear you are experiencing such issues.
The most common cause for the issue you experience is an old Register
node in an .aspx
file. You could use the Find and Replace dialog
to look for "2010.1.309" and remove any leftover Register nodes.
Referencing a project or assembly, which uses a version of Telerik.Web.UI
, different than the one your current project references could cause the issue you experience as well. If that is the case, you could do one of two things:
- Add an appropriate binding redirect to your web.config (more info)
- Recompile your dependent assembly using the latest Telerik.Web.UI.dll
Please do not hesitate to contact us if you experience any further issues.
the Telerik team