Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/MMM1/24CountryDances_1798_Preston.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1279-24CountryDances_1798_Preston.ps) >>/Users/jc/w/tmp/Tune-1279-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/MMM1/24CountryDances_1798_Preston.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Sess-12796.log 25895 Log file, useful mostly for debugging
Tune-1279-24CountryDances_1798_Preston.abc 165 ABC music file with the extracted tune(s)
Tune-1279-24CountryDances_1798_Preston.ps 6 PostScript
Tune-1279-24CountryDances_1798_Preston.txt 165 Plain-text file with the extracted tune(s)
Tune-1279-get.log 4444 Log file, useful mostly for debugging
Tune-12791-get.log 3848 Log file, useful mostly for debugging
Tune-12794-get.log 4940 Log file, useful mostly for debugging
Tune-12797-get.log 4330 Log file, useful mostly for debugging
Tune-12798-JohnJohnson_ChoiceCollectionVol8-V2.abc 173 ABC music file with the extracted tune(s)
Tune-12798-JohnJohnson_ChoiceCollectionVol8-V2.txt 173 Plain-text file with the extracted tune(s)
Tune-12798-get.log 3642 Log file, useful mostly for debugging
These files should be available for 24 hours.