pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9910-21802_OLD_CAMBRIDGE_HORNPIPE.ps) >>/Users/jc/w/tmp/Tune-9910-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Kohlers/21802_OLD_CAMBRIDGE_HORNPIPE.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_9910.log 263256 Log file, useful mostly for debugging
Coll_99101.log 263256 Log file, useful mostly for debugging
Coll_99102.log 264661 Log file, useful mostly for debugging
Form_99105.log 826 Log file, useful mostly for debugging
Tune-9910-21802_OLD_CAMBRIDGE_HORNPIPE.abc 588 ABC music file with the extracted tune(s)
Tune-9910-21802_OLD_CAMBRIDGE_HORNPIPE.ps 36105 PostScript
Tune-9910-21802_OLD_CAMBRIDGE_HORNPIPE.txt 588 Plain-text file with the extracted tune(s)
Tune-9910-get.log 4973 Log file, useful mostly for debugging
Tune-99104-get.log 19244 Log file, useful mostly for debugging
Tune-99107-get.log 4625 Log file, useful mostly for debugging
These files should be available for 24 hours.