Hi Sean, Sorry I should have been more specific. It was in fact Display3D which I was using. I haven't tried the same with Display2D, although Gabriel seemed to think Display2D was ok. Thanks Mike Sean Luke wrote: > Hi Michael. Can you tell me if your model was using Display3D or > Display2D? We are indeed seeing some bugs in Display3D's snapshot > generation and are trying to stamp them out. It seems to fail sometimes > on the first time around and may be a bug in Java3D. > > Sean > > On Jul 24, 2006, at 9:05 AM, Michael Lees wrote: > >> Hi again all, >> >> >> I found something rather curious today. Last week I had ran my >> simulation through various stages taking snapshots for a report. >> I came to look at the png's today and they're all blank black pictures? >> So I re-read the GUI introduction to check if I needed to set >> something but it seemed to say just click the button - which is what >> I'd done. >> >> Anyway I tried running again and this time it worked, which was strange. >> I then tried again but this time I re-sized the display window (as I >> had done in the first set of snapshots) and the snapshot was again a >> blank black screen. >> >> It's not too much of a problem I can just re-generate the pictures at >> default size. I don't know if you had come across this before so >> thought I'd let you know, seems like it'd be fairly easy to fix. >> >> Thanks >> >> >> --Mike >> >> >> This message has been checked for viruses but the contents of an >> attachment >> may still contain software viruses, which could damage your computer >> system: >> you are advised to perform your own checks. Email communications with the >> University of Nottingham may be monitored as permitted by UK legislation.