Thanks Uwe, that was the correct idea. I did not get it that there is even such a great difference in minor releases of ImageMagick. The version in SuSE 10.2 does not convert pngs to eps as proper as Gimp does e.g.
Regards Heiko -- Heiko Schroeder Praha, Ceska Republica http://home.foni.net/~heikos http://www.od.shuttle.de/evb-1