There are a couple of known bugs with ArtRage 2.2 printing output.
On some Intel MacOSX computers the colours are all incorrect.
On some Windows computers with an old HP brand of printer output is just a large black square.
There will be a fix for this in the next update of ArtRage, which is currently in Beta testing.
In the meantime, you can export your pictures from ArtRage as a .PSD or .PNG to import into another application to print.
AndyRage's mantra for graphics engine code:
"Sure - how hard can it be?"