pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-59784-BlackDance0.ps) >>/Users/jc/w/tmp/Tune-59784-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/Scotland/BlackDance0.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-59784-BlackDance0.abc 1909 ABC music file with the extracted tune(s)
Tune-59784-BlackDance0.ps 41896 PostScript
Tune-59784-BlackDance0.txt 1909 Plain-text file with the extracted tune(s)
Tune-59784-get.log 4853 Log file, useful mostly for debugging
These files should be available for 24 hours.