Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/MM2/24CountryDances_1804_Preston.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-20571-24CountryDances_1804_Preston.ps) >>/Users/jc/w/tmp/Tune-20571-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/MM2/24CountryDances_1804_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
Tune-20571-11141_Contra_Dance-001.svg 49923 Scalable Vector Graphics format
Tune-20571-11141_Contra_Dance.abc 1655 ABC music file with the extracted tune(s)
Tune-20571-11141_Contra_Dance.txt 1655 Plain-text file with the extracted tune(s)
Tune-20571-24CountryDances_1804_Preston.abc 164 ABC music file with the extracted tune(s)
Tune-20571-24CountryDances_1804_Preston.ps 6 PostScript
Tune-20571-24CountryDances_1804_Preston.txt 164 Plain-text file with the extracted tune(s)
Tune-20571-get.log 13387 Log file, useful mostly for debugging
These files should be available for 24 hours.