pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8245-Handsome_Ploughboy_A4.ps) >>/Users/jc/w/tmp/Tune-8245-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/hornpipe/Handsome_Ploughboy_A4.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_8245.log 377060 Log file, useful mostly for debugging
Coll_82451.log 264659 Log file, useful mostly for debugging
Coll_82457.log 131839 Log file, useful mostly for debugging
Coll_82459.log 315240 Log file, useful mostly for debugging
Tune-8245-Handsome_Ploughboy_A4.abc 547 ABC music file with the extracted tune(s)
Tune-8245-Handsome_Ploughboy_A4.ps 35189 PostScript
Tune-8245-Handsome_Ploughboy_A4.txt 547 Plain-text file with the extracted tune(s)
Tune-8245-get.log 4697 Log file, useful mostly for debugging
These files should be available for 24 hours.