pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-78132-v2tune.ps) >>/Users/jc/w/tmp/Tune-78132-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/EliasHowe/MusiciansCompanionP3/v2tune.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Tune-78132-get.log 4783 Log file, useful mostly for debugging
Tune-78132-v2tune.abc 579 ABC music file with the extracted tune(s)
Tune-78132-v2tune.ps 30878 PostScript
Tune-78132-v2tune.txt 579 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.