pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6512-Rabbis_Hornpipe-Gm-32-4.ps) >>/Users/jc/w/tmp/Tune-6512-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/shottish/Rabbis_Hornpipe-Gm-32-4.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_65129.log 502105 Log file, useful mostly for debugging
Find_65120.log 1656 Log file, useful mostly for debugging
Tune-6512-Rabbis_Hornpipe-Gm-32-4.abc 774 ABC music file with the extracted tune(s)
Tune-6512-Rabbis_Hornpipe-Gm-32-4.ps 38007 PostScript
Tune-6512-Rabbis_Hornpipe-Gm-32-4.txt 774 Plain-text file with the extracted tune(s)
Tune-6512-get.log 5315 Log file, useful mostly for debugging
Tune-65122-get.log 10209 Log file, useful mostly for debugging
Tune-65123-get.log 7583 Log file, useful mostly for debugging
Tune-65124-get.log 7517 Log file, useful mostly for debugging
These files should be available for 24 hours.