pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1124-OldNicksLumberRoom.ps) >>/Users/jc/w/tmp/Tune-1124-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Scotland/OldNicksLumberRoom.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_11241.log 556015 Log file, useful mostly for debugging
Coll_11242.log 278710 Log file, useful mostly for debugging
Tune-1124-OldNicksLumberRoom.abc 2211 ABC music file with the extracted tune(s)
Tune-1124-OldNicksLumberRoom.ps 49107 PostScript
Tune-1124-OldNicksLumberRoom.txt 2211 Plain-text file with the extracted tune(s)
Tune-1124-get.log 5051 Log file, useful mostly for debugging
These files should be available for 24 hours.