I've Emailed you a reply, with a rescue of the painting file.
It looks as though the error in the file may have been caused by a bug in ArtRage, so any information you can give me on what you may have done when saving it would help us reproduce it here.
Can you also let me know whether you were working on Windows or MacOSX, and exactly which version of ArtRage you were using to write the file.
Thanks for any help you can give us to reproduce and solve the problem here.
Note: If you dont receive the rescued painting file in your EMail, let me know and we'll put it on an ftp server for you
AndyRage's mantra for graphics engine code:
"Sure - how hard can it be?"