pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-72402-WoodDuck.ps) >>/Users/jc/w/tmp/Tune-72402-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/england/WoodDuck.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_72402.log 284330 Log file, useful mostly for debugging
Tune-72402-WoodDuck.abc 1089 ABC music file with the extracted tune(s)
Tune-72402-WoodDuck.ps 39407 PostScript
Tune-72402-WoodDuck.txt 1089 Plain-text file with the extracted tune(s)
Tune-72402-get.log 4741 Log file, useful mostly for debugging
These files should be available for 24 hours.