An update was uploaded to CTAN:
Name of contribution: psfixbb Suggested location on CTAN: support/psfixbb Summary description: Sets or fixes the bounding box of Postscript files. License type: Free
Announcement text:
psfixbb is a program which sets or fixed the bounding box of a Postscript file, using GhostScript, pnmfile and pnmcrop. In contrast to other tools with similar purpose (ghostscript, epstools), psfixbb works also when the background of the image was painted white by the drawing program. The new version deals corrrectly with files which have no showpage command, with landscape files and with files produced on a Mac.
Thanks for the update, I installed it.
For the CTAN Team Rainer Schöpf