pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-37688-Cherily_and_merrily.ps) >>/Users/jc/w/tmp/Tune-37688-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Playford/Cherily_and_merrily.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-37688-Cherily_and_merrily.abc 260 ABC music file with the extracted tune(s)
Tune-37688-Cherily_and_merrily.ps 32851 PostScript
Tune-37688-Cherily_and_merrily.txt 260 Plain-text file with the extracted tune(s)
Tune-37688-all.abc 177 ABC music file with the extracted tune(s)
Tune-37688-all.txt 177 Plain-text file with the extracted tune(s)
Tune-37688-get.log 7899 Log file, useful mostly for debugging
These files should be available for 24 hours.