What kind of problem? The postscript file opened just fine here. If one is on Windows then I can see the problem since very few Windows users bother to install ghostscript for windows, and Adobe Acrobat for some bizarre reason (last I checked) does not open Postscript files.

I put a PDF version of the postscript here, for those on Postscript-viewer-impaired systems:  http://www.brasileiro.net/roberto/bin/system_correction_manual.pdf

-Roberto