Mac version of sixtyforce(n64 emu) Keeps shutting down

Super Mario 64 and Mario kart works surprisingly well but, when i go 20 seconds into it, it either blacks out or closes automatically, can anyone help me out?
Post Merge: [time]1262826822[/time]
nobody know anything about this? I'm only bumping this once

Replying to #1

they stoped the work on our version and shifted to the wii development version