DPR-ERR-2077 error in Report Studio

[vivekishigh]

Hi all,
I am using Cognos 10.1.1 FP3 in the Preprod environment. While accessing a report I came across an error DPR-ERR-2077 Failed to forward request......... The report ran successfully but this error pops up when i try to generate the SQL for the report or while trying to validate it.
The solutions shown in the sites are like upgrading to FP4. Please provide me a work around solution without upgrading to FP4.
Another solution provided by some online forums is to change the property 'Processing' to Default from Database Only which didn't work at all.
So, Please provide me an ample solution asap...