pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-39338-passeisme.ps) >>/Users/jc/w/tmp/Tune-39338-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/galouvielle.free.fr/passeisme.abc

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.60 512x512 PNG]
filesizedescription
Tune-39338-get.log 12241 Log file, useful mostly for debugging
Tune-39338-passeisme.abc 398 ABC music file with the extracted tune(s)
Tune-39338-passeisme.ps 33202 PostScript
Tune-39338-passeisme.txt 398 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.