pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-23538-Monymusk.ps) >>/Users/jc/w/tmp/Tune-23538-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/Scotland/Monymusk.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-23538-Monymusk.abc 3193 ABC music file with the extracted tune(s)
Tune-23538-Monymusk.ps 61489 PostScript
Tune-23538-Monymusk.txt 3193 Plain-text file with the extracted tune(s)
Tune-23538-get.log 4746 Log file, useful mostly for debugging
These files should be available for 24 hours.