Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Book29/24CountryDances_1792_Thompson.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7595-24CountryDances_1792_Thompson.ps) >>/Users/jc/w/tmp/Tune-7595-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Book29/24CountryDances_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_75952.log 574612 Log file, useful mostly for debugging
Coll_75959.log 133067 Log file, useful mostly for debugging
Tune-7595-24CountryDances_1792_Thompson.abc 168 ABC music file with the extracted tune(s)
Tune-7595-24CountryDances_1792_Thompson.ps 6 PostScript
Tune-7595-24CountryDances_1792_Thompson.txt 168 Plain-text file with the extracted tune(s)
Tune-7595-get.log 7537 Log file, useful mostly for debugging
Tune-75951-get.log 5594 Log file, useful mostly for debugging
Tune-75952-get.log 4027 Log file, useful mostly for debugging
Tune-75953-get.log 6151 Log file, useful mostly for debugging
Tune-75956-get.log 5298 Log file, useful mostly for debugging
Tune-75957-get.log 13176 Log file, useful mostly for debugging
Tune-75958-get.log 4208 Log file, useful mostly for debugging
Tune-75959-get.log 3994 Log file, useful mostly for debugging
These files should be available for 24 hours.