[Q] Installing Cerberus as a system application problems.

Guys, could anyone help me to solve a problem.
Moforooted . KK: Computerfreek 1.5.5A image.
Downloaded and installed Cerberus.
Problem: doesn't allow me to convert it to system appl, so I could get all features I need.(locations, ect..)
Tried with TB, and, as Cerberus recommended, Link2SD.
With Link2SD getting message "appl Cerberus stopped"
with TB its just stopping Cerberus and nothing happening.

Anyone have had similar problems?
Thanks!