pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-19036-Greenmantle.ps) >>/Users/jc/w/tmp/Tune-19036-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Scotland/Greenmantle.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_19036.log 284330 Log file, useful mostly for debugging
Tune-19036-Greenmantle.abc 1156 ABC music file with the extracted tune(s)
Tune-19036-Greenmantle.ps 42524 PostScript
Tune-19036-Greenmantle.txt 1156 Plain-text file with the extracted tune(s)
Tune-19036-get.log 4807 Log file, useful mostly for debugging
These files should be available for 24 hours.