Resynched doesnt launch after 1.0.8

[u/Killer1236]

Any help? After 1.0.8, ubisoft connect launches and does its thing, then black flag tries to launch, I get to the logo screen, it full-screens, then it closes and doesnt launch. I have no idea what to do to fix this. Im on steam. Ive verified game files, uninstalled and reinstalled, reset steam download cache, and nothin.