Thanks guys, it appears that LoadFont (BRL.Font) is returning a Null. I'll do some more investigating tomorrow and see if I can come up with an interim patch.
Mac 12" PB G4/1.5GHz/1.25Gb/GeForce FX Go5200/Tiger 10.4.2/Blitz Max 1.10
Mac 12" PB G4/1.5GHz/1.25Gb/GeForce FX Go5200/Tiger 10.4.2/Blitz Max 1.10