GP Invoice Import has encountered a problem

Hi dear,
I am doing work in .net framework and I am receiving Unhandled Exception please tell me why this exception occur when I try to open any project in it always appear same problem.

GP Invoice Import
GP Invoice Import has encountered a problem and needs to close. We are sorry for the inconvenience.
If you were n the middle of something, the information you were working on might be lost.
Debug Close
