Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1804/24CountryDances_1771_Thompson.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7978-24CountryDances_1771_Thompson.ps) >>/Users/jc/w/tmp/Tune-7978-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/1804/24CountryDances_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
Form_79781.log 954 Log file, useful mostly for debugging
Form_79784.log 916 Log file, useful mostly for debugging
Form_79787.log 803 Log file, useful mostly for debugging
Tune-7978-24CountryDances_1771_Thompson.abc 166 ABC music file with the extracted tune(s)
Tune-7978-24CountryDances_1771_Thompson.ps 6 PostScript
Tune-7978-24CountryDances_1771_Thompson.txt 166 Plain-text file with the extracted tune(s)
Tune-7978-get.log 4465 Log file, useful mostly for debugging
Tune-79789-Ann_Sheehy_McAuliffe-001.svg 14071 Scalable Vector Graphics format
Tune-79789-Ann_Sheehy_McAuliffe.abc 403 ABC music file with the extracted tune(s)
Tune-79789-Ann_Sheehy_McAuliffe.txt 403 Plain-text file with the extracted tune(s)
Tune-79789-get.log 4674 Log file, useful mostly for debugging
These files should be available for 24 hours.