pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-42953-Seacoast.ps) >>/Users/jc/w/tmp/Tune-42953-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Scotland/Seacoast.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-42953-Seacoast.abc 244 ABC music file with the extracted tune(s)
Tune-42953-Seacoast.ps 30611 PostScript
Tune-42953-Seacoast.txt 244 Plain-text file with the extracted tune(s)
Tune-42953-get.log 4690 Log file, useful mostly for debugging
These files should be available for 24 hours.