pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5413-20691_Tom_and_Jerry.ps) >>/Users/jc/w/tmp/Tune-5413-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/EliasHowe/MusiciansCompanionP2/20691_Tom_and_Jerry.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Tune-5413-20691_Tom_and_Jerry.abc 1167 ABC music file with the extracted tune(s)
Tune-5413-20691_Tom_and_Jerry.ps 40980 PostScript
Tune-5413-20691_Tom_and_Jerry.txt 1167 Plain-text file with the extracted tune(s)
Tune-5413-get.log 13899 Log file, useful mostly for debugging
Tune-54130-get.log 4735 Log file, useful mostly for debugging
Tune-54132-get.log 9053 Log file, useful mostly for debugging
Tune-54133-get.log 11403 Log file, useful mostly for debugging
Tune-54136-get.log 7624 Log file, useful mostly for debugging
Tune-54138-get.log 9362 Log file, useful mostly for debugging
Tune-54139-get.log 9118 Log file, useful mostly for debugging
These files should be available for 24 hours.