pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3126-Shottish_8.ps) >>/Users/jc/w/tmp/Tune-3126-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/shottish/Shottish_8.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-3126-Shottish_8.abc 360 ABC music file with the extracted tune(s)
Tune-3126-Shottish_8.ps 33580 PostScript
Tune-3126-Shottish_8.txt 360 Plain-text file with the extracted tune(s)
Tune-3126-get.log 4389 Log file, useful mostly for debugging
Tune-31266-get.log 15661 Log file, useful mostly for debugging
Tune-31267-get.log 3312 Log file, useful mostly for debugging
These files should be available for 24 hours.