I think I know the cause of this bug. ^_^
Read only files.
On classic, their dead wav is scary and I dont like it, I made my dead.wav read only.. and a few days later! Oh my! New graal! I couldnt install it.. always stuck on dead.wav
but I realised it was a read only file. So by making it not read only, i could enjoy some good ol' showpoly
