pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6272-SC02.ps) >>/Users/jc/w/tmp/Tune-6272-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Contra/SC02.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_62720.log 146673 Log file, useful mostly for debugging
Find_62726.log 1495 Log file, useful mostly for debugging
Tune-6272-SC02.abc 1722 ABC music file with the extracted tune(s)
Tune-6272-SC02.ps 46130 PostScript
Tune-6272-SC02.txt 1722 Plain-text file with the extracted tune(s)
Tune-6272-get.log 4302 Log file, useful mostly for debugging
These files should be available for 24 hours.