pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-29298-Bung_Your_Eye-Am-2.ps) >>/Users/jc/w/tmp/Tune-29298-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/session/jig/Bung_Your_Eye-Am-2.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_29298.log 572875 Log file, useful mostly for debugging
Tune-29298-Bung_Your_Eye-Am-2.abc 603 ABC music file with the extracted tune(s)
Tune-29298-Bung_Your_Eye-Am-2.ps 34584 PostScript
Tune-29298-Bung_Your_Eye-Am-2.txt 603 Plain-text file with the extracted tune(s)
Tune-29298-get.log 5758 Log file, useful mostly for debugging
These files should be available for 24 hours.