Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Dales_Selection/24FavouriteDances_1783_Straight.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6155-24FavouriteDances_1783_Straight.ps) >>/Users/jc/w/tmp/Tune-6155-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Dales_Selection/24FavouriteDances_1783_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
Form_61552.log 1859 Log file, useful mostly for debugging
Tune-6155-24FavouriteDances_1783_Straight.abc 179 ABC music file with the extracted tune(s)
Tune-6155-24FavouriteDances_1783_Straight.ps 6 PostScript
Tune-6155-24FavouriteDances_1783_Straight.txt 179 Plain-text file with the extracted tune(s)
Tune-6155-get.log 4573 Log file, useful mostly for debugging
Tune-61551-get.log 1543 Log file, useful mostly for debugging
These files should be available for 24 hours.