I also bought from them and I thought, I installed it twice.
1.st was the hybrid quick wire method. I was careful and when it was all done I loaded it up and tried an original, great! I didn't screw it up, then a tried a backup and got nothing, then tried a gamecube backup and got nothing (I never thought about testing the setup disc at that time...) I was using DVD-R at that time all were burnt at 2.4x (Ricoh, on a LaCie drive)
SO I opened it up, checked the points and re-did it with a wire install. Same thing, I was like... crap! now what, so for the heck of it I tried burning the DVD-R at 8x and nothing, then I thought heck I have to use the setup disc, I also had some DVD+R, i burnt at 8x with auto bitsetting to DVDROM and it worked! I was so happy, then I tried a game burnt on DVD+R at 8x and again works! I have never had a problem yet with US games or JAP games (cept for the ones that everyone says are not working)
So to make a long post short, don't give up, try some +R's and burn at whatever rated speed the disc/burner is at.
(oops, I didn't see that you already fixed the problem... sorry, but here's the post anyways
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