Wirelessly posted (Mozilla/5.0 (iPod; CPU iPhone OS 5_0_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A405 Safari/7534.48.3)
Okay, I figured out what was causing the issue: Apparently the i386 dynarec core that PCSX-R uses is 4-byte alligned, but Mac OS X code needs to be 16-byte alligned under i386. If it isn't, it crashes when it gets to a libSystem call.