pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-42544-Alan_and_Pat_Dixons_10th.ps) >>/Users/jc/w/tmp/Tune-42544-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/OriginallyMine/Alan_and_Pat_Dixons_10th.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Form_42544.log 1011 Log file, useful mostly for debugging
Tune-42544-Alan_and_Pat_Dixons_10th.abc 1048 ABC music file with the extracted tune(s)
Tune-42544-Alan_and_Pat_Dixons_10th.ps 38842 PostScript
Tune-42544-Alan_and_Pat_Dixons_10th.txt 1048 Plain-text file with the extracted tune(s)
Tune-42544-get.log 4852 Log file, useful mostly for debugging
These files should be available for 24 hours.