pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-70558-MissJohnstoneOfArdrossan2.ps) >>/Users/jc/w/tmp/Tune-70558-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Scotland/MissJohnstoneOfArdrossan2.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_70558.log 349212 Log file, useful mostly for debugging
Tune-70558-MissJohnstoneOfArdrossan2.abc 1507 ABC music file with the extracted tune(s)
Tune-70558-MissJohnstoneOfArdrossan2.ps 44698 PostScript
Tune-70558-MissJohnstoneOfArdrossan2.txt 1507 Plain-text file with the extracted tune(s)
Tune-70558-get.log 5269 Log file, useful mostly for debugging
These files should be available for 24 hours.