Hi Rob,
Thanks for your followup. It’s actually kinda “my own darn fault” but I’ll still respond in case it’s something to look out for in the future. I failed to install Events Calendar (basic), and just zoomed right into installing my Pro version. While reading the error message closely should have told me that I needed to install the basic/free version, it didn’t register. You might make that language stronger since I really didn’t expect it – maybe others are the same (buy the premium plugin, install it, live happily ever after).
The issue was that when I clicked on the link to install the basic version from the warning message, the page didn’t load. Maybe that action is bad? Anyways hope this helps!
Best,
Jacob