Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1812/24CountryDances_1770.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8661-24CountryDances_1770.ps) >>/Users/jc/w/tmp/Tune-8661-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/1812/24CountryDances_1770.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-86610.log 16341075 Log file, useful mostly for debugging
Tune-8661-24CountryDances_1770.abc 157 ABC music file with the extracted tune(s)
Tune-8661-24CountryDances_1770.ps 6 PostScript
Tune-8661-24CountryDances_1770.txt 157 Plain-text file with the extracted tune(s)
Tune-8661-get.log 4276 Log file, useful mostly for debugging
Tune-86610-30334_German_Waltz.abc 756 ABC music file with the extracted tune(s)
Tune-86610-30334_German_Waltz.pdf 11260 Portable Data Format
Tune-86610-30334_German_Waltz.ps 33612 PostScript
Tune-86610-30334_German_Waltz.txt 756 Plain-text file with the extracted tune(s)
Tune-86610-get.log 5694 Log file, useful mostly for debugging
Tune-86617-get.log 1352 Log file, useful mostly for debugging
Tune-86618-30372_Emelines_Fancy.abc 743 ABC music file with the extracted tune(s)
Tune-86618-30372_Emelines_Fancy.pdf 15246 Portable Data Format
Tune-86618-30372_Emelines_Fancy.ps 35465 PostScript
Tune-86618-30372_Emelines_Fancy.txt 743 Plain-text file with the extracted tune(s)
Tune-86618-get.log 10967 Log file, useful mostly for debugging
These files should be available for 24 hours.