pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2143-8097_Chelmsford_Assembly.ps) >>/Users/jc/w/tmp/Tune-2143-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/JohnJohnson/8097_Chelmsford_Assembly.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_21430.log 921838 Log file, useful mostly for debugging
Coll_21431.log 261851 Log file, useful mostly for debugging
Tune-2143-8097_Chelmsford_Assembly.abc 407 ABC music file with the extracted tune(s)
Tune-2143-8097_Chelmsford_Assembly.ps 34360 PostScript
Tune-2143-8097_Chelmsford_Assembly.txt 407 Plain-text file with the extracted tune(s)
Tune-2143-get.log 4825 Log file, useful mostly for debugging
Tune-21438-get.log 1450 Log file, useful mostly for debugging
Tune-21439-get.log 7698 Log file, useful mostly for debugging
These files should be available for 24 hours.