JScript runtime error- Need help ASAP

[Eva]

Do you to security i have to rum the application in Medium trust.

I am getting the following warning

Microsoft JScript runtime error: ASP.NET Ajax client-side framework failed to load.
Microsoft JScript runtime error: 'Sys' is undefined
Microsoft JScript runtime error: 'Telerik' is undefined

Inner Exceptions:

Cannot perform CAS Asserts in Security Transparent methods

in radgrid edit click.

Need help ASAP

[Shinu]

Hello Eva,

The following help document describes the same issue.
General Troubleshooting.

Hope it helps.

Thanks,
Shinu.