Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Book45/24CountryDances_1810_Button_Whitaker.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4752-24CountryDances_1810_Button_Whitaker.ps) >>/Users/jc/w/tmp/Tune-4752-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Book45/24CountryDances_1810_Button_Whitaker.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-4752-24CountryDances_1810_Button_Whitaker.abc 175 ABC music file with the extracted tune(s)
Tune-4752-24CountryDances_1810_Button_Whitaker.ps 6 PostScript
Tune-4752-24CountryDances_1810_Button_Whitaker.txt 175 Plain-text file with the extracted tune(s)
Tune-4752-get.log 10013 Log file, useful mostly for debugging
Tune-47520-get.log 4845 Log file, useful mostly for debugging
Tune-47521-get.log 4004 Log file, useful mostly for debugging
Tune-47524-get.log 7538 Log file, useful mostly for debugging
Tune-47525-get.log 5493 Log file, useful mostly for debugging
Tune-47527-get.log 4116 Log file, useful mostly for debugging
Tune-47528-get.log 9444 Log file, useful mostly for debugging
These files should be available for 24 hours.