pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8901-30704_Rattle_the_Cash.ps) >>/Users/jc/w/tmp/Tune-8901-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/EliasHowe/MusiciansCompanionP3/30704_Rattle_the_Cash.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Coll_89019.log 465410 Log file, useful mostly for debugging
Form_89012.log 997 Log file, useful mostly for debugging
Tune-8901-30704_Rattle_the_Cash.abc 639 ABC music file with the extracted tune(s)
Tune-8901-30704_Rattle_the_Cash.ps 33378 PostScript
Tune-8901-30704_Rattle_the_Cash.txt 639 Plain-text file with the extracted tune(s)
Tune-8901-get.log 6524 Log file, useful mostly for debugging
Tune-89014-get.log 3318 Log file, useful mostly for debugging
These files should be available for 24 hours.