pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-43938-HamiltonRant.ps) >>/Users/jc/w/tmp/Tune-43938-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Scotland/HamiltonRant.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-43938-HamiltonRant.abc 1683 ABC music file with the extracted tune(s)
Tune-43938-HamiltonRant.ps 45255 PostScript
Tune-43938-HamiltonRant.txt 1683 Plain-text file with the extracted tune(s)
Tune-43938-get.log 4869 Log file, useful mostly for debugging
These files should be available for 24 hours.