It's very strange.
Could you send us the screen shot of the error?
Also, please make sure that you have given the permissions to the correct user. On computers running Windows Server 2003, by default ASP.NET runs as part of the IIS 6.0 (W3wp.exe) process using the default identity NETWORK SERVICE
. If IIS5 isolation mode is configured on a computer running Windows Server 2003, the ASP.NET worker process runs in the ASPNET
the Telerik team