pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-76763-Madam_Betty.ps) >>/Users/jc/w/tmp/Tune-76763-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/JohnWalsh/Madam_Betty.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_76763.log 800 Log file, useful mostly for debugging
Tune-76763-Madam_Betty.abc 1050 ABC music file with the extracted tune(s)
Tune-76763-Madam_Betty.ps 33981 PostScript
Tune-76763-Madam_Betty.txt 1050 Plain-text file with the extracted tune(s)
Tune-76763-get.log 4459 Log file, useful mostly for debugging
These files should be available for 24 hours.