Thanks Bitt. That wasn't it exactly, but you got me on the right track. My Windows user name has a space in it. The .openrio directory was there in the profile but there was no jempegrc file - obviously I haven't run it on this machine before. I removed the .openrio directory and ran it again. It created the directory and that was it.

Anyway, I created a new profile without a space in it and it seems to work fine. However, I'd like to be able to run it under my profile that has a space in it.

I would have thought for sure someone would have run it with a Windows user name with a space in it before.

Thanks for your help Bitt. At least I now know what's wrong.