Hey Cade,
I'm stumped. I tried running testing this out on a machine with the same specs and both Vizard 2.5 and 3.0 worked fine.
The message "** ERROR: Invalid argument, usage: winviz.exe <filename>" means that the Vizard executable is not getting the filename passed as an argument. This should not be happening. Try running the following at the command line:
Code:
"C:\Program Files\WorldViz\Vizard30\bin\winviz" "C:\Program Files\WorldViz\Vizard30\examples\nodes\rotation.py"
Let me know if this works.
Also, Vizard 3.0 should be completely self contained, so I don't understand how it is affecting the Vizard 2.5 installation. I'll keep trying things out here. Is this computer a laptop? If so, can you bring it to the office so I can have a look at it?