I might have figured out what might be the problem:
- QCAD Pro switches automatically to the print preview when choosing File - Print. - QCAD CE doesn't. You have to choose File - Print Preview and then File - Print. This is a bug and has been fixed for the next release.
Can you confirm that this is what caused the problem?
yes, that is correct. furthermore, when after a fresh install i activate print preview and remove pro-tools afterwards, it is no longer possible to deactivate print preview without closing and restarting qcad. After a restart, i can turn print preview on and off without problems, but the printing problem persists.