pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2308-Unlicensed_Session.ps) >>/Users/jc/w/tmp/Tune-2308-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/hornpipe/Unlicensed_Session.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_23086.log 414995 Log file, useful mostly for debugging
Tune-2308-Unlicensed_Session.abc 786 ABC music file with the extracted tune(s)
Tune-2308-Unlicensed_Session.ps 36111 PostScript
Tune-2308-Unlicensed_Session.txt 786 Plain-text file with the extracted tune(s)
Tune-2308-get.log 5146 Log file, useful mostly for debugging
Tune-23083-get.log 7974 Log file, useful mostly for debugging
Tune-23085-get.log 4765 Log file, useful mostly for debugging
These files should be available for 24 hours.