I was on stock rooted FRG83G and decided to give GPA19 a try.
so I booted to SPRecovery, did a factory reset and cache wipe, loaded the ROM and wow... worked like a charm the first time.
no boot loops or any problems whatsoever. immediately upgraded market to play store then went on to download facebook, twitter, terminal emulator, path, foursquare, and instagram. all looking good.