pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7191-11341_.ps) >>/Users/jc/w/tmp/Tune-7191-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/EliasHowe/MusiciansCompanionP1/11341_.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-7191-11341_.abc 33 ABC music file with the extracted tune(s)
Tune-7191-11341_.ps 6 PostScript
Tune-7191-11341_.txt 33 Plain-text file with the extracted tune(s)
Tune-7191-get.log 9351 Log file, useful mostly for debugging
Tune-71910-get.log 13921 Log file, useful mostly for debugging
Tune-71912-get.log 2860 Log file, useful mostly for debugging
Tune-71913-get.log 8209 Log file, useful mostly for debugging
Tune-71914-get.log 4586 Log file, useful mostly for debugging
Tune-71916-get.log 4513 Log file, useful mostly for debugging
Tune-71918-get.log 13297 Log file, useful mostly for debugging
These files should be available for 24 hours.