pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-72176-ColdAndRaw.ps) >>/Users/jc/w/tmp/Tune-72176-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Scotland/ColdAndRaw.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_72176.log 281520 Log file, useful mostly for debugging
Tune-72176-ColdAndRaw.abc 2019 ABC music file with the extracted tune(s)
Tune-72176-ColdAndRaw.ps 48164 PostScript
Tune-72176-ColdAndRaw.txt 2019 Plain-text file with the extracted tune(s)
Tune-72176-get.log 6186 Log file, useful mostly for debugging
These files should be available for 24 hours.