** Solved it. had to roll the Nvidia driver back to studio driver 572.83 with a clean install. Problem solved. **
Same issue here.
AMD 9950x3d, Nvidia Aorus Master 5090, Windows 11
Everything was fully updated, but couldn’t launch Twinmotion 2025.1.1
I found this youtube video online that suggested this is a known issue and rolling back the nvidia driver would help.
(50) Twinmotion 2025.1.1 Blue Screen Crash Fix RTX 5070/5080/5090 - YouTube
I also noticed I was using the game ready driver, and I switched to the old studio driver.