pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-89779-2193_Hey_to_the_Camp.ps) >>/Users/jc/w/tmp/Tune-89779-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CR12/2193_Hey_to_the_Camp.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Tune-89779-2193_Hey_to_the_Camp.abc 998 ABC music file with the extracted tune(s)
Tune-89779-2193_Hey_to_the_Camp.ps 39858 PostScript
Tune-89779-2193_Hey_to_the_Camp.txt 998 Plain-text file with the extracted tune(s)
Tune-89779-get.log 4715 Log file, useful mostly for debugging
These files should be available for 24 hours.