Hi, just had an app-freeze right after i klick on rF2 Single Player. I wasn't able to kill the task after that, had to log-out and log-in user to continue. some info: I installed build649 above an existing build629. This time i also choose to update directx in installer, which i didn't with build 629. My actual graphic driver: GeForce 334.89. No plugins installed. System was in "energy saving" mode before.
No Tim, i could'nt recognice any symptoms you mentioned. Just a black screen. I wasn't able to reproduce the issue so far.
Oh, I think it's the known UI issue... try reverting to the base UI on the advanced tab in the launcher if it happens again. Did you switch UI??
I'm not completely sure, but probably i switched UI in the session before the issue, from std. to ISI-Kart. But after a system restart, rF2 worked fine again.