pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6285-3173.ps) >>/Users/jc/w/tmp/Tune-6285-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CR/3173=Barley_Cakes.abc2.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Coll_6285.log 1097825 Log file, useful mostly for debugging
Coll_62850.log 1423786 Log file, useful mostly for debugging
Coll_62853.log 1448890 Log file, useful mostly for debugging
Form_62856.log 866 Log file, useful mostly for debugging
Tune-6285-3173.abc 763 ABC music file with the extracted tune(s)
Tune-6285-3173.ps 37186 PostScript
Tune-6285-3173.txt 763 Plain-text file with the extracted tune(s)
Tune-6285-get.log 4574 Log file, useful mostly for debugging
Tune-62850-get.log 4160 Log file, useful mostly for debugging
Tune-62855-get.log 3996 Log file, useful mostly for debugging
Tune-62856-get.log 4521 Log file, useful mostly for debugging
These files should be available for 24 hours.