hi my friend i have same problem. but i cant solve that with this sugestion! my program sometimes run right but sometimes that has this error . i must reinistall my windows. and then it solved. please help me. Error in File C:\DOCUME~1\VRB9EL~1\ASPNET\LOCALS~1\Temp\temp_5e2f9fd3-9032-4a21-8594-7eda91f8f800.rpt: Operation not yet implemented.