pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-33464-HollinBuss1.ps) >>/Users/jc/w/tmp/Tune-33464-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Scotland/HollinBuss1.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Sess-33464.log 2584102 Log file, useful mostly for debugging
Tune-33464-HollinBuss1.abc 1775 ABC music file with the extracted tune(s)
Tune-33464-HollinBuss1.ps 49181 PostScript
Tune-33464-HollinBuss1.txt 1775 Plain-text file with the extracted tune(s)
Tune-33464-get.log 4853 Log file, useful mostly for debugging
These files should be available for 24 hours.