In the past several months we've been getting many bug reports from PayWindow telling us there was an exception message : Invalid operation in GDI+ (Code: 1).

After months of attempting to find out what started this problem we discovered it was being caused by Kaspersky Internet Security software blocking PayWindow from accessing the Windows operating system gdiplus.dll file.

This is what one customer wrote to us solving the problem:

"I just noticed my Kaspersky internet security had some corrupted files and it recommended I reinstall the program. I did. And now PayWindow is working correctly again! I apologize for taking so much of your time today. I really appreciate the great customer service and I'm glad the problem was finally resolved. Thank you so much!"

So simply reinstalling Kaspersky fixed the problem.