pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-24583-1782_Thompson.ps) >>/Users/jc/w/tmp/Tune-24583-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/dfty/1782_Thompson.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_24583.log 935961 Log file, useful mostly for debugging
Tune-24583-1782_Thompson.abc 10854 ABC music file with the extracted tune(s)
Tune-24583-1782_Thompson.ps 80139 PostScript
Tune-24583-1782_Thompson.txt 10854 Plain-text file with the extracted tune(s)
Tune-24583-get.log 10882 Log file, useful mostly for debugging
These files should be available for 24 hours.