Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/MMM1/24FavouriteDances_1784_Straight.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4700-24FavouriteDances_1784_Straight.ps) >>/Users/jc/w/tmp/Tune-4700-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/MMM1/24FavouriteDances_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-4700-24FavouriteDances_1784_Straight.abc 168 ABC music file with the extracted tune(s)
Tune-4700-24FavouriteDances_1784_Straight.ps 6 PostScript
Tune-4700-24FavouriteDances_1784_Straight.txt 168 Plain-text file with the extracted tune(s)
Tune-4700-get.log 4503 Log file, useful mostly for debugging
Tune-47001-get.log 13558 Log file, useful mostly for debugging
Tune-47005-24CountryDances_1796_Preston.abc 167 ABC music file with the extracted tune(s)
Tune-47005-24CountryDances_1796_Preston.ps 6 PostScript
Tune-47005-24CountryDances_1796_Preston.txt 167 Plain-text file with the extracted tune(s)
Tune-47005-get.log 19658 Log file, useful mostly for debugging
Tune-47006-get.log 8508 Log file, useful mostly for debugging
Tune-47007-get.log 4448 Log file, useful mostly for debugging
Tune-47008-get.log 4380 Log file, useful mostly for debugging
Tune-47009-get.log 10221 Log file, useful mostly for debugging
These files should be available for 24 hours.