Today I came across this problem as well. I have been using GEP for about two years, worked quite well I'd say, didn't have any problems. But due to the clashes on my PC had to re-install the current operating system, Windows 7 64-Bit version, but I receive the same sort of error as I click on GEP icon on my desktop. I am on it, I will let you guys know if I get any solution for that.