pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-68062-NarVindenEr.ps) >>/Users/jc/w/tmp/Tune-68062-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Denmark/NarVindenEr.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_68062.log 140867 Log file, useful mostly for debugging
Tune-68062-NarVindenEr.abc 392 ABC music file with the extracted tune(s)
Tune-68062-NarVindenEr.ps 33639 PostScript
Tune-68062-NarVindenEr.txt 392 Plain-text file with the extracted tune(s)
Tune-68062-get.log 4457 Log file, useful mostly for debugging
These files should be available for 24 hours.