From a Rhino USB stick tutorial

 From:  Phil (PHILBO)
3726.22 In reply to 3726.21 
I tried to just use 1.0 after using the Beta V2.0 for so long. I couldn't hack it and had to pony up the $100 for the upgrade.

If things don't work out on the Linux side of things, please post it to the forums so they can get resolved.