pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6740-Newcastle.ps) >>/Users/jc/w/tmp/Tune-6740-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/England/Newcastle.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_67402.log 285735 Log file, useful mostly for debugging
Coll_67403.log 145386 Log file, useful mostly for debugging
Coll_67406.log 285735 Log file, useful mostly for debugging
Tune-6740-Newcastle.abc 2893 ABC music file with the extracted tune(s)
Tune-6740-Newcastle.ps 39406 PostScript
Tune-6740-Newcastle.txt 2893 Plain-text file with the extracted tune(s)
Tune-6740-get.log 5208 Log file, useful mostly for debugging
These files should be available for 24 hours.