Im also having the same problem. Try to take a picture but then it doesn't save, camcorder force closes upon use.. etc
I found the fix permissions option in Liberty Settings but i couldn't find the option to permissions and zipalign on boot.. where is that option located?
Also already checked that the camera.apk was in the system/app directory. Just trying to exhaust all options before a flash to stock and a reflash of Liberty.
its not in the liberty toolbox, its under settings/liberty settings, towards the very bottom