Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/AmericanSD/24CountryDances_1771_Thompson.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-90894-24CountryDances_1771_Thompson.ps) >>/Users/jc/w/tmp/Tune-90894-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/AmericanSD/24CountryDances_1771_Thompson.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-90894-24CountryDances_1771_Thompson.abc 172 ABC music file with the extracted tune(s)
Tune-90894-24CountryDances_1771_Thompson.ps 6 PostScript
Tune-90894-24CountryDances_1771_Thompson.txt 172 Plain-text file with the extracted tune(s)
Tune-90894-EnglishPassepiedThe_PLFD1701_436-001.svg 12815 Scalable Vector Graphics format
Tune-90894-EnglishPassepiedThe_PLFD1701_436.abc 394 ABC music file with the extracted tune(s)
Tune-90894-EnglishPassepiedThe_PLFD1701_436.txt 394 Plain-text file with the extracted tune(s)
Tune-90894-get.log 9206 Log file, useful mostly for debugging
These files should be available for 24 hours.