What os version are you using? I run Vue 5 on a single G4 with only 768 MHz without a problem. So as Baz said, the requirements are not carved in stone. What could be the problem here is that the demo version was created on an older OS version than yours. There were problems like that before sometimes. It is a shame how Apple changes OS things constantly so that some programs does not run anymore when there is an even mnor OS release. But i guess of course. Contact E-on if it is not running, and let them know about your system things as well. So that they have a chance...

One day your ship comes in - but you're at the airport.