I am playing with a 4:3 monitor, and with the latest update, I can't get passed "Your selected monitor resolution is smaller then the size of the Main User Interface. Do you want to let TCE resize the all panels, so they all fit into screen?"
I have three options, Yes, No and Cancel.
If I press Yes or Cancel, the question repeats itself. If I press No, I get a question asking me "Do you want to keep the selected monitor to display TCE?" Yes, No. If I hit Yes or No, I am back at the initial question.
Previous versions did not have this and since I do have two monitors, two panels were on the second monitor, not an issue for me at all. But, no matter what I click with this warning, I end up in a loop and can't start TCE.
EDIT: If I spam the close message button, it slowly starts to load TCE... so my guess is that it asks this question for each panel, and that is why it felt like an endless loop?
EDIT 2: Ok, this doesn't work... now that TCE is loaded, these warnings keeps popping up as soon as I click on anything in TCE.