Posted 01 Mar 2011
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We're using telerik version 2009.2.826.35
We've just upgrade (from .net 3.5) to .Net 4.0 and asp.net 4.0
The Radcombo, sits inside asp undatepanel, postbacks after the selected item changes.
(Attaching the s-shot for the error) This is occuring after the results comes back from the server.
Becasue of this error, our submit button is not enabled(ie this is enabled from the server side code)
This was working fine with .net 3.5
Please treat this as an urgent issue.
Thanks for the help.