pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2808-Tipperary_So_Far_Away_RJ.ps) >>/Users/jc/w/tmp/Tune-2808-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/RJ/waltz/Tipperary_So_Far_Away_RJ.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
Coll_2808.log 264789 Log file, useful mostly for debugging
Coll_28082.log 147647 Log file, useful mostly for debugging
Coll_28084.log 47 Log file, useful mostly for debugging
Coll_28086.log 130707 Log file, useful mostly for debugging
Coll_28088.log 260559 Log file, useful mostly for debugging
Form_28082.log 828 Log file, useful mostly for debugging
Tune-2808-Tipperary_So_Far_Away_RJ.abc 500 ABC music file with the extracted tune(s)
Tune-2808-Tipperary_So_Far_Away_RJ.ps 34789 PostScript
Tune-2808-Tipperary_So_Far_Away_RJ.txt 500 Plain-text file with the extracted tune(s)
Tune-2808-get.log 5018 Log file, useful mostly for debugging
These files should be available for 24 hours.