Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/100_Popular_HRJCD/24FavouriteDances_1779_Straight.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-57149-24FavouriteDances_1779_Straight.ps) >>/Users/jc/w/tmp/Tune-57149-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/100_Popular_HRJCD/24FavouriteDances_1779_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-57149-079_Mrs_Nugent.abc 970 ABC music file with the extracted tune(s)
Tune-57149-079_Mrs_Nugent.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-57149-079_Mrs_Nugent.ps 39288 PostScript
Tune-57149-079_Mrs_Nugent.txt 970 Plain-text file with the extracted tune(s)
Tune-57149-24FavouriteDances_1779_Straight.abc 181 ABC music file with the extracted tune(s)
Tune-57149-24FavouriteDances_1779_Straight.ps 6 PostScript
Tune-57149-24FavouriteDances_1779_Straight.txt 181 Plain-text file with the extracted tune(s)
Tune-57149-get.log 10044 Log file, useful mostly for debugging
These files should be available for 24 hours.