Hi Ron, IMCROSS was installed on Ubuntu Linux 8.04, 32bit, server install cat /etc/lsb-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=8.04 DISTRIB_CODENAME=hardy DISTRIB_DESCRIPTION="Ubuntu 8.04" Linux kb.ucstaff.win.canberra.edu.au 2.6.24-16-server #1 SMP Thu Apr 10 13:58:00 UTC 2008 i686 GNU/Linux You are correct in your assumption for the Vista machine. It was run in a VM on Mac OS-X 10.5, running Intel hardware. At this point in time it is the only Vista machine I have available, but as it is a bit of an odd setup thought it might be good for testing. Yes it does appear those 10.5 error logs are all the same. Essentially I compiled the sample programs and it failed. Tried a second time and it failed, I then did a make clean_imcross and recompiled from scratch, once I had confirmed that everything else was working on 10.4.11 I tried to run the regression tests one last time. I included all of them in case there was something that I had done or something I missed that was not obvious to me and was causing the problems. Sorry for not being more descriptive and detailed in regards to what the logs contained. Hope this is helpful Cheers, Steven Holloway