P760 Can't access sdcard0 (internal storage) topic

I recently flashed AOSPA 4.6 BETA 6, I can't access to the internal storage. It says SDcard is unmounted in ES File. Some apps like Camera and Youtube forcecloses every time I launch them. What can be the issue here? I have CWM Touch 4.0.0.6.5 (version may be wrong, but the latest I found).

Waiting for help, I don't own this phone and I'm going to give it to its owner tomorrow. Save me please!