pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6405-ChimesOfDunkirk.ps) >>/Users/jc/w/tmp/Tune-6405-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/england/ChimesOfDunkirk.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_64051.log 284330 Log file, useful mostly for debugging
Coll_64053.log 318200 Log file, useful mostly for debugging
Coll_64057.log 277305 Log file, useful mostly for debugging
Tune-6405-ChimesOfDunkirk.abc 1782 ABC music file with the extracted tune(s)
Tune-6405-ChimesOfDunkirk.ps 42262 PostScript
Tune-6405-ChimesOfDunkirk.txt 1782 Plain-text file with the extracted tune(s)
Tune-6405-get.log 5003 Log file, useful mostly for debugging
Tune-64050-get.log 5750 Log file, useful mostly for debugging
These files should be available for 24 hours.