pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-89842-ItWisnaeMe.ps) >>/Users/jc/w/tmp/Tune-89842-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Scotland/ItWisnaeMe.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_89842.log 656330 Log file, useful mostly for debugging
Tune-89842-ItWisnaeMe.abc 1411 ABC music file with the extracted tune(s)
Tune-89842-ItWisnaeMe.ps 46316 PostScript
Tune-89842-ItWisnaeMe.txt 1411 Plain-text file with the extracted tune(s)
Tune-89842-get.log 4786 Log file, useful mostly for debugging
These files should be available for 24 hours.