Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/CDM5/24FavouriteDances_1784_Straight.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5891-24FavouriteDances_1784_Straight.ps) >>/Users/jc/w/tmp/Tune-5891-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/CDM5/24FavouriteDances_1784_Straight.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-5891-24FavouriteDances_1784_Straight.abc 168 ABC music file with the extracted tune(s)
Tune-5891-24FavouriteDances_1784_Straight.ps 6 PostScript
Tune-5891-24FavouriteDances_1784_Straight.txt 168 Plain-text file with the extracted tune(s)
Tune-5891-get.log 9750 Log file, useful mostly for debugging
Tune-58911-24CountryDances_1803_Preston.abc 167 ABC music file with the extracted tune(s)
Tune-58911-24CountryDances_1803_Preston.pdf 2217 Portable Data Format
Tune-58911-24CountryDances_1803_Preston.ps 6 PostScript
Tune-58911-24CountryDances_1803_Preston.txt 167 Plain-text file with the extracted tune(s)
Tune-58911-get.log 5418 Log file, useful mostly for debugging
Tune-58914-get.log 3364 Log file, useful mostly for debugging
Tune-58918-get.log 4682 Log file, useful mostly for debugging
These files should be available for 24 hours.