I've updated Premiere Pro to 7.1, but i can't launch my old projects ... until i switch off my matrox mxo from the preferences.
After reading this blog post : http://forums.adobe.com/message/5810852#5810852, i've uninstalled all my creative cloud softwares using the CC Cleaner tool, and reinstalled all my drivers (Blackmagic intensity pro + Matrox MXO 2 mini Max).
Unfortunately, the problem remains the same. Premiere crashes on startup or while enabling the Matrox.
Note : the problem does not happen if I uncheck the "Enable CC overlays on input" option.