hi.
finally i've come up to this dirty script:
#!/bin/sh
while [ "forever" ] do ps -x | grep "/Applications/Pd-0.38.4.app" | grep "guiport" > /dev/null || /Applications/Pd-0.38.4.app/Contents/MacOS/Pd & sleep 20 done
you have to write the -open command for the patch to open into .pdrc
the second grep is for deleting the ps-info of the grep itself (as i telled, pgrep is not available)
the script is running until it is killed
r.