pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-93470-DrawMeABucket.ps) >>/Users/jc/w/tmp/Tune-93470-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Contra/DrawMeABucket.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Form_93470.log 1122 Log file, useful mostly for debugging
Tune-93470-DrawMeABucket.abc 1282 ABC music file with the extracted tune(s)
Tune-93470-DrawMeABucket.ps 38854 PostScript
Tune-93470-DrawMeABucket.txt 1282 Plain-text file with the extracted tune(s)
Tune-93470-get.log 4540 Log file, useful mostly for debugging
These files should be available for 24 hours.