pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7660-MachineWithoutHorses.ps) >>/Users/jc/w/tmp/Tune-7660-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/500/MachineWithoutHorses.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-7660-MachineWithoutHorses.abc 1831 ABC music file with the extracted tune(s)
Tune-7660-MachineWithoutHorses.ps 50398 PostScript
Tune-7660-MachineWithoutHorses.txt 1831 Plain-text file with the extracted tune(s)
Tune-7660-get.log 8801 Log file, useful mostly for debugging
Tune-76600-get.log 32078 Log file, useful mostly for debugging
Tune-76601-get.log 1406 Log file, useful mostly for debugging
Tune-76602-get.log 4833 Log file, useful mostly for debugging
Tune-76603-3342_the_Celebrated_German_Minuet.abc 3252 ABC music file with the extracted tune(s)
Tune-76603-3342_the_Celebrated_German_Minuet.pdf 74376 Portable Data Format
Tune-76603-3342_the_Celebrated_German_Minuet.ps 69362 PostScript
Tune-76603-3342_the_Celebrated_German_Minuet.txt 3252 Plain-text file with the extracted tune(s)
Tune-76603-get.log 6054 Log file, useful mostly for debugging
Tune-76605-get.log 5499 Log file, useful mostly for debugging
Tune-76606-get.log 5599 Log file, useful mostly for debugging
Tune-76608-get.log 3865 Log file, useful mostly for debugging
Tune-76609-get.log 1406 Log file, useful mostly for debugging
These files should be available for 24 hours.