[Gary]

on mac I enter -ml in comand line options, hit ok and z crashes....

Gary

[Tim Ellis]

Hi Gary, double check you don't have 'AutoExposure' on as well.

Multilight and AutoExposure won't work together.

Forgive me if you already know this.

Tim.

[Dexel]

Same here (formZ 6.1.0 on PPC Mac)
No Autoexposure involved. -ml or -p:low or whatever command line input crashes formZ without even a crash alert.