I periodically get black screens with a small light blue square outline in the top left corner after I complete a missions. Specifically after the racial splash screen saying "victory", click continue here and it black screens.
This happened for 3 missions in a row after the patch on Friday, I subsequently verified by cache and it appeared to fix it however it happened again last night.
I can alt+F4 out of the black screen and Elites and skills etc are all awarded, but in order to get the post mission scenes and dialogue I need to reload a save and do the end of the mission again.
Not the end of the world but can be annoying when I've forgotten to save right before the very end.