pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-93522-Bourree_slow.ps) >>/Users/jc/w/tmp/Tune-93522-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/bourree/Bourree_slow.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_93522.log 566735 Log file, useful mostly for debugging
Tune-93522-Bourree_slow.abc 289 ABC music file with the extracted tune(s)
Tune-93522-Bourree_slow.ps 33099 PostScript
Tune-93522-Bourree_slow.txt 289 Plain-text file with the extracted tune(s)
Tune-93522-get.log 9673 Log file, useful mostly for debugging
These files should be available for 24 hours.