cgminer crashes on everything but litecoins

[barnfold]

hi
very new to this.
im trying to mine ppcoins but every mining software i try just wont work.
im using guiminer-scypt and mining litecoins just fine.
if i use guiminer - cgminer, reaper etc just crash before connecting.
if i use cgminer direct and put in a fake address it doesnt crash ?
tried different pools and different versions of each software

radeon 5770
windows 7 x64
catalyst 13.4

any suggestions as to why i wouldnt be able to mine ppcoins but im ok with lite coins

thanks !