Usualy the corse or the system stalling at the bootpic is due to some other app opening a screen or requestor before cgx is started and/or before loadwb is called to close the bootpic.
this is mentioned somewhere in the cgx manual/changelog.
As for cgx version, I only used upto 4.3 rc5 (using voodoo/p96 atm). No trouble patching up as the installer calls the cd and patches the cd libs as apposed to the ones already installed