TDS ONLINE SUBMISSION OF CORRECTION STATEMENT

I have install Traces e m signer in my system,and it also works properly, because when I choose to do online correction using Dsc , it reads my digital signature, but after doing all corrections, when I am about to submit correction statement, it reads my digital signature , and when I sign it and click on submit, it displays a message ' correction can not be submitted' , how to solve this error? please help