Running Simplify 3D 4.1.1 and frequently it crashes as soon as I press "Prepare to Print"
. In this respect it is less reliable than earlier versions I have used. Workaround is to make sure to save the factory file (Ctrl + S) immediately prior to pressing "Prepare to Print".
Last time this happened, I had two models (not particularly complex), both with supports in use and using two Processes (for both models) to print at 50% infill to height of 18.38mm, then 100% infill after that. After the crash, restarting Simplify 3D loads an older version of the particular profile I was using (or at least an older model is appearing) so I always open the original factory file, redo what was lost before the crash, make sure to save the profile, then continue on as normal.