Repetier Host for Mac crashes repeatingly

We are running a single extruder Creatr on a Macbook, but Repetier-Host crashes continously (about 20 seconds after the printing started). Setup was fine, STL loading is fine, Slicing is fine, heating the machine is fine, just about 20 seconds after the printing starts, Repetier-Host crashes and printing stops.

System:
- Creatr 3d printer
- Macbook Core2Duo
- Mac OS X 10.7.5 Lion
- Repetier- Host 0.56

Any idea's what could be the problem?

Andreas

Mac offers a crash report. That might help. Without it, it can be anything.

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FWIW, I'm running the same version of Repetier on the same type of Macbook, but I'm running 10.8.5 and it's always been rock solid. I also have 8G of ram and closely watch the FPS during prints. You should probably look at other programs/processes running to eliminate what you can that might be causing a conflict. As repetier noted, look for the crash report cause for all we know, there's some usb conflict causing the issue.