Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Book12/24CountryDances_1778_Thompson.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6852-24CountryDances_1778_Thompson.ps) >>/Users/jc/w/tmp/Tune-6852-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Book12/24CountryDances_1778_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-6852-24CountryDances_1778_Thompson.abc 168 ABC music file with the extracted tune(s)
Tune-6852-24CountryDances_1778_Thompson.ps 6 PostScript
Tune-6852-24CountryDances_1778_Thompson.txt 168 Plain-text file with the extracted tune(s)
Tune-6852-get.log 4479 Log file, useful mostly for debugging
Tune-68520-get.log 4167 Log file, useful mostly for debugging
Tune-68521-get.log 3528 Log file, useful mostly for debugging
Tune-68522-get.log 5561 Log file, useful mostly for debugging
Tune-68523-get.log 10906 Log file, useful mostly for debugging
Tune-68524-get.log 6814 Log file, useful mostly for debugging
Tune-68525-get.log 3538 Log file, useful mostly for debugging
Tune-68527-get.log 3238 Log file, useful mostly for debugging
Tune-68529-get.log 7680 Log file, useful mostly for debugging
These files should be available for 24 hours.