pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-78004-NoelEnTrio.ps) >>/Users/jc/w/tmp/Tune-78004-get.log 2>&1" returned status 256
http://michel.bellon.free.fr/Musique/abc/Noel/NoelEnTrio.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
Form_78004.log 740 Log file, useful mostly for debugging
Tune-78004-NoelEnTrio.abc 1029 ABC music file with the extracted tune(s)
Tune-78004-NoelEnTrio.ps 41662 PostScript
Tune-78004-NoelEnTrio.txt 1029 Plain-text file with the extracted tune(s)
Tune-78004-get.log 4313 Log file, useful mostly for debugging
These files should be available for 24 hours.