pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-81022-Valse_Bourree.ps) >>/Users/jc/w/tmp/Tune-81022-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/bourree/Valse_Bourree.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_81022.log 672110 Log file, useful mostly for debugging
Tune-81022-Valse_Bourree.abc 237 ABC music file with the extracted tune(s)
Tune-81022-Valse_Bourree.ps 32604 PostScript
Tune-81022-Valse_Bourree.txt 237 Plain-text file with the extracted tune(s)
Tune-81022-get.log 4512 Log file, useful mostly for debugging
These files should be available for 24 hours.