Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Whetherly21/24CountryDances_1810_Button_Whitaker.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2693-24CountryDances_1810_Button_Whitaker.ps) >>/Users/jc/w/tmp/Tune-2693-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Whetherly21/24CountryDances_1810_Button_Whitaker.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Coll_26930.log 237210 Log file, useful mostly for debugging
Tune-2693-24CountryDances_1810_Button_Whitaker.abc 180 ABC music file with the extracted tune(s)
Tune-2693-24CountryDances_1810_Button_Whitaker.ps 6 PostScript
Tune-2693-24CountryDances_1810_Button_Whitaker.txt 180 Plain-text file with the extracted tune(s)
Tune-2693-get.log 4654 Log file, useful mostly for debugging
Tune-26930-get.log 3990 Log file, useful mostly for debugging
These files should be available for 24 hours.