Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Border/24CountryDances_1792_Thompson.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8724-24CountryDances_1792_Thompson.ps) >>/Users/jc/w/tmp/Tune-8724-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Border/24CountryDances_1792_Thompson.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_87246.log 662812 Log file, useful mostly for debugging
Tune-8724-24CountryDances_1792_Thompson.abc 168 ABC music file with the extracted tune(s)
Tune-8724-24CountryDances_1792_Thompson.ps 6 PostScript
Tune-8724-24CountryDances_1792_Thompson.txt 168 Plain-text file with the extracted tune(s)
Tune-8724-get.log 10425 Log file, useful mostly for debugging
Tune-87240-get.log 4903 Log file, useful mostly for debugging
Tune-87242-get.log 5551 Log file, useful mostly for debugging
Tune-87243-get.log 3574 Log file, useful mostly for debugging
Tune-87244-get.log 4721 Log file, useful mostly for debugging
Tune-87247-get.log 4123 Log file, useful mostly for debugging
Tune-87249-get.log 5266 Log file, useful mostly for debugging
These files should be available for 24 hours.