pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5733-Jefferson_and_Liberty.ps) >>/Users/jc/w/tmp/Tune-5733-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Contra/Jefferson_and_Liberty.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_5733.log 382680 Log file, useful mostly for debugging
Coll_57330.log 452933 Log file, useful mostly for debugging
Coll_57336.log 371440 Log file, useful mostly for debugging
Tune-5733-Jefferson_and_Liberty.abc 1323 ABC music file with the extracted tune(s)
Tune-5733-Jefferson_and_Liberty.ps 37357 PostScript
Tune-5733-Jefferson_and_Liberty.txt 1323 Plain-text file with the extracted tune(s)
Tune-5733-get.log 6290 Log file, useful mostly for debugging
Tune-57336-get.log 4243 Log file, useful mostly for debugging
These files should be available for 24 hours.