pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2711-ChristchurchBells.ps) >>/Users/jc/w/tmp/Tune-2711-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/500/ChristchurchBells.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Tune-2711-ChristchurchBells.abc 647 ABC music file with the extracted tune(s)
Tune-2711-ChristchurchBells.ps 34575 PostScript
Tune-2711-ChristchurchBells.txt 647 Plain-text file with the extracted tune(s)
Tune-2711-get.log 4549 Log file, useful mostly for debugging
Tune-27111-George_Meikle.abc 147 ABC music file with the extracted tune(s)
Tune-27111-George_Meikle.ps 6 PostScript
Tune-27111-George_Meikle.txt 147 Plain-text file with the extracted tune(s)
Tune-27111-get.log 12432 Log file, useful mostly for debugging
Tune-27112-get.log 5482 Log file, useful mostly for debugging
Tune-27117-get.log 4482 Log file, useful mostly for debugging
Tune-27118-get.log 4433 Log file, useful mostly for debugging
These files should be available for 24 hours.