So I was testing Penguin out last quite intensively last night and I appear to have come across a fairly consistent bug.
Whenever I go to:
Rhino Options > Document Properties > Penguin > Global Settings > Color Intensity
And set the ‘Interval’ of the ‘Creases’ and/or ‘Silhouettes’ to more than than a value of about ‘60’, it will spontaneously just crash. That happened about a dozen times. It’s pretty regular for the one model I was working on.