Fusion 17.2 Transitions from previous project all black

Hey folks - on Windows 10 after upgrading to 17.2 all my Fusion transitions only turn up black screens. Totally non-functional. Anyone have this problem as well?

I tried a few randomly and they all worked fine.

Studio 17.2 for Windows.

Are you applying the transitions newly, or were they already there?

What happens if you try to apply them again?

What do you see if you right click on the Transition and Open in Fusion?