Ok, trashing the preferences didn’t help. Either that or I didn’t do it correctly.
This is what it reads in Terminal:
Last login – Friday Feb. 20th, 2009 9:15 – onttyp1
/applications/final\cut\pro.app/contents/macOS/final\cut\pro; exit
Welcome to Darwin!
comp-4:~timdench$ /applications/final\cut\pro.app/contents/macOS/final\cut\pro; exit
logout
[process completed]
So it never gives it a chance to do anything.
It closes before any windows or aspects of the program show up.
The only thing to show up is the toolbar and the small template that appears in the middle of the screen that displays all the basic Final Cut information.
Immediately after, it quits.