Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/AB/24CountryDances_1810_Button_Whitaker_Elegant.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8330-24CountryDances_1810_Button_Whitaker_Elegant.ps) >>/Users/jc/w/tmp/Tune-8330-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/AB/24CountryDances_1810_Button_Whitaker_Elegant.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_83308.log 462768 Log file, useful mostly for debugging
Coll_83309.log 364415 Log file, useful mostly for debugging
Form_83302.log 856 Log file, useful mostly for debugging
Tune-8330-24CountryDances_1810_Button_Whitaker_Elegant.abc 179 ABC music file with the extracted tune(s)
Tune-8330-24CountryDances_1810_Button_Whitaker_Elegant.ps 6 PostScript
Tune-8330-24CountryDances_1810_Button_Whitaker_Elegant.txt 179 Plain-text file with the extracted tune(s)
Tune-8330-get.log 4768 Log file, useful mostly for debugging
Tune-83301-get.log 1747 Log file, useful mostly for debugging
Tune-83303-get.log 6658 Log file, useful mostly for debugging
Tune-83304-get.log 1727 Log file, useful mostly for debugging
Tune-83305-get.log 9146 Log file, useful mostly for debugging
Tune-83308-get.log 4535 Log file, useful mostly for debugging
These files should be available for 24 hours.