Sorry to hear you are having issues. Need to know few things.
1) Windows 10 version numbers. Please use Winver.exe for full Windows version numbers.
2) Any special reasons you are not using the latest Groupy version? Now its at 1.41 or 1.42 Beta.
3) Open gmail with Browser? if Browser, what browser? Pdf what extension or program is use to open your pdf in your system?
We need to know more details so we can try to recreate your issue on our system.
Stardock Community Assistant.