I was able to uninstall and reinstall it. Same problem still exists.
I suppose you are using the latest SDK version 1.3.3.
Please mention your PC specification, We have tested the SDK/GPIF designer, and we are not aware of any such problem.
Can you check on a different PC of same specification? Can it be because of some changes in the OS registry settings?
I ended up opening a ticket. I tried it on another computer and it worked. So, it looks like it was something wrong with my desktop computer and not the software. I haven't fixed it, but that's most likely it.