Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Book23/24CountryDances_1793_Preston.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3742-24CountryDances_1793_Preston.ps) >>/Users/jc/w/tmp/Tune-3742-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Book23/24CountryDances_1793_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
Coll_37427.log 604012 Log file, useful mostly for debugging
Tune-3742-24CountryDances_1793_Preston.abc 167 ABC music file with the extracted tune(s)
Tune-3742-24CountryDances_1793_Preston.ps 6 PostScript
Tune-3742-24CountryDances_1793_Preston.txt 167 Plain-text file with the extracted tune(s)
Tune-3742-get.log 4452 Log file, useful mostly for debugging
Tune-37420-get.log 3988 Log file, useful mostly for debugging
Tune-37422-get.log 3380 Log file, useful mostly for debugging
Tune-37423-get.log 1372 Log file, useful mostly for debugging
Tune-37424-get.log 12260 Log file, useful mostly for debugging
Tune-37427-get.log 4544 Log file, useful mostly for debugging
These files should be available for 24 hours.