If you are having issues with 2019, you are SOL if you did like I did and upgraded to the same directory that my more or less bulletproof copy of 2017 resided in.

I find even 2019's 32-bit version to be buggier than I want to put up with and I'm kicking myself now for having installed 2019 into the same directory as 2017. And no, I don't feel like reinstalling 2017, so I'll just put up with it and hope PGM works through the bugs fairly quickly.