Mac Studio won't launch Think or Swim

This affects Mac Studio with first silicon chip and the Mac Studio monitor. 2022.
This doesn't affect Mac Book Pros, Mac mini, with Sonoma or iOS. When I unplug the Mac Studio monitor, the platform won't start on any of the other three monitors.
I have presented problem to TD Ameritrade's Think or Swim tech support.
I have searched settings for problem. What setting should I check?
When I launch TOS it loads to creating desktop and stalls.
The green progress bar goes 90% to finish.
The desktop platform will not launch.
Detached charts and watch lists launch.
I cannot turn think or Swim off with a button. I have to go to "quit think or swim".
Yes, I have rebooted.
The problem appeared after I uploaded Snoma on all my Macs.

Mac Studio (2022)

Posted on Sep 28, 2023 4:32 PM

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Posted on Oct 2, 2023 8:53 AM

call TOS support, ask for technical support. They have work around. Go to settings, > Desktop and dock>Desktop and stage manager. Click In Stage Manager and only in stage manager>scroll down to Mission Control and turn off Displays have separate spaces. Restart computer.
Launch TOS, wait for spinning wheel to stop. Go to apple, click on about this Mac, close the about this Mac window and the desktop should appear.
If you have multiple monitors, you may have to detach all but your main monitor the first time you do this.
After you get TOS open, you can re connect additional monitors and the system should work ok.
TOS tech thinks they may have a solution later on Oct. 2 but it may take a few more days before the system works as it is supposed.

Again, if this doesn't help, call TOS and ask for the technical help desk.

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