I am using Inmotion, so I assume they are running Linux, but couldn't say as it's a hosted solution with CPanel.
It is possible that I never dropped the tables after uninstalling 5.2.8. I did a full uninstall, scrub, and install again and it worked. I have no idea why. I am reasonably certain that I followed the exact same steps I did the first time. It is possible that there's some weird browser caching thing going on with the upload? I don't really know.
It's solved the problem for now.
Fresh Install 6.0.3: Bug on Submitting Events
1 year 5 months ago #34020