pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9664-20072_Canaan.ps) >>/Users/jc/w/tmp/Tune-9664-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/EliasHowe/MusiciansCompanionP2/20072_Canaan.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.65 512x512 PNG]
filesizedescription
Tune-9664-20072_Canaan.abc 721 ABC music file with the extracted tune(s)
Tune-9664-20072_Canaan.ps 33971 PostScript
Tune-9664-20072_Canaan.txt 721 Plain-text file with the extracted tune(s)
Tune-9664-get.log 11330 Log file, useful mostly for debugging
Tune-96640-get.log 4673 Log file, useful mostly for debugging
Tune-96641-get.log 1304 Log file, useful mostly for debugging
Tune-96644-get.log 4249 Log file, useful mostly for debugging
Tune-96646-get.log 10864 Log file, useful mostly for debugging
Tune-96647-get.log 4199 Log file, useful mostly for debugging
Tune-96648-get.log 5432 Log file, useful mostly for debugging
Tune-96649-get.log 1328 Log file, useful mostly for debugging
These files should be available for 24 hours.