pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-75413-CatInTheWindow.ps) >>/Users/jc/w/tmp/Tune-75413-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/england/CatInTheWindow.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_75413.log 278710 Log file, useful mostly for debugging
Tune-75413-CatInTheWindow.abc 966 ABC music file with the extracted tune(s)
Tune-75413-CatInTheWindow.ps 38168 PostScript
Tune-75413-CatInTheWindow.txt 966 Plain-text file with the extracted tune(s)
Tune-75413-get.log 8964 Log file, useful mostly for debugging
These files should be available for 24 hours.