pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-34800-Robin_and_Kate.ps) >>/Users/jc/w/tmp/Tune-34800-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/JohnWalsh/Robin_and_Kate.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-34800-Robin_and_Kate.abc 1227 ABC music file with the extracted tune(s)
Tune-34800-Robin_and_Kate.ps 33270 PostScript
Tune-34800-Robin_and_Kate.txt 1227 Plain-text file with the extracted tune(s)
Tune-34800-get.log 4536 Log file, useful mostly for debugging
These files should be available for 24 hours.