pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-54944-ScotchMorris.ps) >>/Users/jc/w/tmp/Tune-54944-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/England/ScotchMorris.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_54944.log 537752 Log file, useful mostly for debugging
Tune-54944-ScotchMorris.abc 1244 ABC music file with the extracted tune(s)
Tune-54944-ScotchMorris.ps 41771 PostScript
Tune-54944-ScotchMorris.txt 1244 Plain-text file with the extracted tune(s)
Tune-54944-get.log 4424 Log file, useful mostly for debugging
These files should be available for 24 hours.