Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1759/24CountryDances_1770_Longman.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-80217-24CountryDances_1770_Longman.ps) >>/Users/jc/w/tmp/Tune-80217-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1759/24CountryDances_1770_Longman.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-80217-10011_Miller_of_Drone.abc 701 ABC music file with the extracted tune(s)
Tune-80217-10011_Miller_of_Drone.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-80217-10011_Miller_of_Drone.ps 38375 PostScript
Tune-80217-10011_Miller_of_Drone.txt 701 Plain-text file with the extracted tune(s)
Tune-80217-24CountryDances_1770_Longman.abc 165 ABC music file with the extracted tune(s)
Tune-80217-24CountryDances_1770_Longman.ps 6 PostScript
Tune-80217-24CountryDances_1770_Longman.txt 165 Plain-text file with the extracted tune(s)
Tune-80217-get.log 9892 Log file, useful mostly for debugging
These files should be available for 24 hours.