Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1751/24CountryDances_1766.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9688-24CountryDances_1766.ps) >>/Users/jc/w/tmp/Tune-9688-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/1751/24CountryDances_1766.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-9688-24CountryDances_1766.abc 157 ABC music file with the extracted tune(s)
Tune-9688-24CountryDances_1766.ps 6 PostScript
Tune-9688-24CountryDances_1766.txt 157 Plain-text file with the extracted tune(s)
Tune-9688-get.log 4276 Log file, useful mostly for debugging
Tune-96880-get.log 7826 Log file, useful mostly for debugging
Tune-96881-get.log 3449 Log file, useful mostly for debugging
Tune-96882-CSGBT_1794-V2.abc 150 ABC music file with the extracted tune(s)
Tune-96882-CSGBT_1794-V2.ps 6 PostScript
Tune-96882-CSGBT_1794-V2.txt 150 Plain-text file with the extracted tune(s)
Tune-96882-get.log 5475 Log file, useful mostly for debugging
Tune-96885-1812_Wilson_Harmony_FourNewCountryDances.abc 177 ABC music file with the extracted tune(s)
Tune-96885-1812_Wilson_Harmony_FourNewCountryDances.ps 6 PostScript
Tune-96885-1812_Wilson_Harmony_FourNewCountryDances.txt 177 Plain-text file with the extracted tune(s)
Tune-96885-get.log 9473 Log file, useful mostly for debugging
Tune-96889-24CountryDances_1767_Thompson.abc 179 ABC music file with the extracted tune(s)
Tune-96889-24CountryDances_1767_Thompson.ps 6 PostScript
Tune-96889-24CountryDances_1767_Thompson.txt 179 Plain-text file with the extracted tune(s)
Tune-96889-get.log 4468 Log file, useful mostly for debugging
These files should be available for 24 hours.