Thanks again for replying Downunder. I will see what I can sort out over weekend with it. I noticed that as Flashprint exports .x3g files, do I need to do anything to let notepad++ read it? I'll keep playing with that though. I have noticed that it won't print the basic test cube file that came with the printer, which it has managed to do several times in the past, so it may not be an issue with the print files and as you say may be a mechanical issue.