Hard to describe, but when I load a part, slice it, then preview it all is well.
If I then duplicate that part x number of times, and re-slice it, the preview still only shows the original part.
I have to delete the original part, the re-copy one of the copies to get it to work.
For example, I load "part 1", slice it, preview it= good
I duplicate "part 1" 3 times for a total of 4 parts (parts 2, 3, and 4)
When I re-slice the job, the preview will still only show part 1- even if I move it it shows up fine in its new location on the preview, but the other models wont.
To fix I must remove part 1 then copy say, part 2 one time, to get a total of 4 files.
On larger files it sometimes crashes S3d.