[pstricks] problem withe pstricks-add.pro

[cpiateck at univ-orleans.fr]

I have  tryed the code wixh is in p 108 in pstricks-add doc  v 2.75 june
25 2006. There is no latex mistake, and dvips does the job without
complaining. But when opening the ps file I have an ofding mistake answer.

Thanks

Cyrille