I am getting error decoder.4 and decoder.5 when I try to run it. Any ideas? At first I assumed it was a rom mismatch so I got the latest version of both Mame and Stargate. No go. So then I assumed that there may be a bios file for Williams games and I can't see to locate them. Anyone know what version of Mame I am supposed to use to not see these errors, or why I'm getting these errors?