CM11: can't adjust alarm, clock stops

I succesfully flashed CM11 4/20 on my GT-N7000 and really like it so far. Only problem i have is, that every time i try to set an alarm and want to adjust its settings, i get a window saying "clock stopped". After that i'm put back to homescreen.
I tried clearing the clocks cache and data and did a cache and dalvik wipe, but nothing solved the problem... :( Also i couldn't find a solution for this on the web.

Does anybody know how to fix this? I would really like to keep the rom.

Thanks a lot!