I tried to reinstall them but it didn't change anything.
I'll try to put the original rom files again to see if apps are working (don't know if it helps but in the logcat, it says there is an error with java for any of the non-working apps)
To go back to Windows, just put a link (on your home screen) through "activities" from laucherpro widget to "confirm reboot" in the apps list. ;)
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