Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Book40/24CountryDances_1771_Thompson.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3442-24CountryDances_1771_Thompson.ps) >>/Users/jc/w/tmp/Tune-3442-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Book40/24CountryDances_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_34428.log 2136 Log file, useful mostly for debugging
Tune-3442-24CountryDances_1771_Thompson.abc 168 ABC music file with the extracted tune(s)
Tune-3442-24CountryDances_1771_Thompson.ps 6 PostScript
Tune-3442-24CountryDances_1771_Thompson.txt 168 Plain-text file with the extracted tune(s)
Tune-3442-get.log 4475 Log file, useful mostly for debugging
Tune-34420-get.log 90626 Log file, useful mostly for debugging
Tune-34422-get.log 7115 Log file, useful mostly for debugging
Tune-34423-get.log 3712 Log file, useful mostly for debugging
Tune-34426-get.log 4159 Log file, useful mostly for debugging
Tune-34429-get.log 4804 Log file, useful mostly for debugging
These files should be available for 24 hours.