4MB JPEGs are huge, so is a 170 MB printing task! It will take quite a few minutes to finish. The fact that the program got in not responding state does not mean that it will not ever finish the job. Since XP Microsoft introduced this fake 'not responding' white application window. This is misleading, IMHO, because it is just faked by Windows and does not report the status of your program, which is in fact running. It will do so for a long time, I'm afraid to finish the job.
Please check your JPEGs though. We are aware that Amyuni processes images very slowly if the color depth or some other parameter of the image is corrupt. It will process it, but it will take a lot of time. Re-save your JPEGs on windows in an image manipulating program (I think even Paint will do). That might help.
If you have a placed image on your master layout, publishing a blank layout might also hang. Try to publish an empty layout with one line only. It should work. Also try printng to the Amyuni virtual printer to see if it makes a difference.
Greg
Gergely Kmethy
VP, Customer Success, Graphisoft