Default [Q] (HELP) wildchild rom v3.3 can't install latest poweramp app

hey guys, i just want to know if somebody already tried using wildchild v3.3 rom, i cant install the latest poweramp and its unlocker.. that is the only issue i've noticed in this rom.. im using this rom 4months already, its fast and not laggy.. pls help anyone who knows how to solve this.. tnx!