pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-74883-511_Dennis_ONeill.ps) >>/Users/jc/w/tmp/Tune-74883-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/JohnMacphersonMulhollan/511_Dennis_ONeill.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_74883.log 1199973 Log file, useful mostly for debugging
Tune-74883-511_Dennis_ONeill.abc 952 ABC music file with the extracted tune(s)
Tune-74883-511_Dennis_ONeill.ps 37950 PostScript
Tune-74883-511_Dennis_ONeill.txt 952 Plain-text file with the extracted tune(s)
Tune-74883-get.log 4743 Log file, useful mostly for debugging
These files should be available for 24 hours.