pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4431-NetherbyHall.ps) >>/Users/jc/w/tmp/Tune-4431-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Scotland/NetherbyHall.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_44314.log 273090 Log file, useful mostly for debugging
Coll_44318.log 814281 Log file, useful mostly for debugging
Tune-4431-NetherbyHall.abc 2741 ABC music file with the extracted tune(s)
Tune-4431-NetherbyHall.ps 52603 PostScript
Tune-4431-NetherbyHall.txt 2741 Plain-text file with the extracted tune(s)
Tune-4431-get.log 4862 Log file, useful mostly for debugging
Tune-44310-get.log 1331 Log file, useful mostly for debugging
These files should be available for 24 hours.