Bob - After putting the Mac_Mini into Restore Mode and forcing it to reinstall Sequoia, removing MC33.0.36, restarting the mac-mini and re-installing MC33.0.33 I finally got MC33 to open normally.
To me it looks like the Ios version of Sequoia may not be the the only Sequoia version that can do a very good impersonation of a Brick Making Factory.
The Fontize problem on the Mac has definitely been fixed but there are still at least 4 problems with Playing Now Popups on the Mac:-
1. The Global keyboard section on the Popup Settings Window/Page has Ctrl+I and not Cmd+I on it.
2. If a Playing Now Popup is showing on the screen the Main MC Window Minimise Button behaves normally but to bring the Main Window back up (i.e. Maximise it) clicking on the MC Icon in the Dock doesn't work. To get the main MC Window back up the user has to Right-Click on the MC Icon, select the Show All Windows option to bring up the desktop and then click on the very small main MC Window, which probably will be just above the Dock to bring the Main MC Window back up at the size it was before it was minimised.
3. Unlike with MC on the Win Platform, MC on the Mac is doing something very different when it encounters an instruction that uses this combination Height="26" fontsize="13"
on the Win PC if the data to be presented on the screen is longer that the lines width value it will "wordwrap" the data onto 2 lines before overflowing
but on the Mac it only ever displays 1 line as this Image is reveals (the top one is Marko's "Play" Popup on my Win11-PC the lower one is it on the Mac-Mini)
(https://englishtiger.uk/downloads/images/Play_on_Both.png)
4. A 9 year-old girl ended up crying when she discovered that the 3 Playing Now Popups she and I spent 2 weeks developing may never see the light of day.
Because we discovered yet another Minimise/Maximise problem.
If you use the Minimise Button on a Playing Now Popup it works correctly, but if you then use it's Maximise Button it will bring up an odd looking MC window that you have to right click-on to change to a Different View and then click on that windows Maximise Button which may result in MC redisplaying the Playing Now Window and if you are really lucky the Dock will not have vanished from the screen.
This is one of the 3 Popups we worked on:-
(https://englishtiger.uk/downloads/images/ET_Ultra_3-Tracks_on__Mac.png)
And as you can see we managed to convert the MC Ultra TI JavaScript routine that uses a Tracks Genre to switch between "Classical" and "Non-Classical" Display Modes into a set of Complex Expression Language Instructions to do a similar "Trick" in a Playing Now Popup in both the "Text" and "Tooltip" instructions including the tooltips for the CoverArt and buttons.