Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/square/24CountryDances_1765_Thompson.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2177-24CountryDances_1765_Thompson.ps) >>/Users/jc/w/tmp/Tune-2177-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/square/24CountryDances_1765_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
Tune-2177-24CountryDances_1765_Thompson.abc 168 ABC music file with the extracted tune(s)
Tune-2177-24CountryDances_1765_Thompson.ps 6 PostScript
Tune-2177-24CountryDances_1765_Thompson.txt 168 Plain-text file with the extracted tune(s)
Tune-2177-get.log 8523 Log file, useful mostly for debugging
Tune-21770-get.log 4584 Log file, useful mostly for debugging
Tune-21771-get.log 9270 Log file, useful mostly for debugging
Tune-21775-get.log 12420 Log file, useful mostly for debugging
Tune-21776-get.log 4327 Log file, useful mostly for debugging
Tune-21778-get.log 5432 Log file, useful mostly for debugging
These files should be available for 24 hours.