pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4501-Afton_Water.ps) >>/Users/jc/w/tmp/Tune-4501-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Scotland/Afton_Water.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_4501.log 284330 Log file, useful mostly for debugging
Coll_45012.log 274495 Log file, useful mostly for debugging
Coll_45014.log 1354821 Log file, useful mostly for debugging
Tune-4501-Afton_Water.abc 1713 ABC music file with the extracted tune(s)
Tune-4501-Afton_Water.ps 43133 PostScript
Tune-4501-Afton_Water.txt 1713 Plain-text file with the extracted tune(s)
Tune-4501-get.log 5844 Log file, useful mostly for debugging
These files should be available for 24 hours.