For some reason safestrap is unable to mount the system partition. This happened once before I upgraded to jelly bean ota. After that everything worked fine.
EDIT: I un installed recovery then safe strap, rebooted. From stock rom I deleted the TWRP directory & safe strap folder. Rebooted. Re-installed safestrap app, installed recovery. Now everything is fine.
EDIT: I un installed recovery then safe strap, rebooted. From stock rom I deleted the TWRP directory & safe strap folder. Rebooted. Re-installed safestrap app, installed recovery. Now everything is fine.