Hi Sumit,
This message is shown when you have disabled javascript through a browser settings. What you should do is to check in the IEDevToolBar tool Disable menu whether you have a tick next to Script option. If so, you should remove the tick and reload the page - this will fix the problem.
In the common case this will not affect your users because by default script is enabled for browsers so your users will not have to make an extra step.
For your convenience I attached corresponding screenshots - with disabled script and the problem and with enabled script and things working fine.
Regards,
Svetlina Anati
the Telerik team
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