Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Dales_Selection/24CountryDances_1770.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5760-24CountryDances_1770.ps) >>/Users/jc/w/tmp/Tune-5760-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Dales_Selection/24CountryDances_1770.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-5760-24CountryDances_1770.abc 168 ABC music file with the extracted tune(s)
Tune-5760-24CountryDances_1770.ps 6 PostScript
Tune-5760-24CountryDances_1770.txt 168 Plain-text file with the extracted tune(s)
Tune-5760-get.log 4342 Log file, useful mostly for debugging
Tune-57602-get.log 1375 Log file, useful mostly for debugging
Tune-57604-get.log 1410 Log file, useful mostly for debugging
Tune-57608-get.log 1421 Log file, useful mostly for debugging
These files should be available for 24 hours.