Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/TomThumb/24CountryDances_1778_Thompson.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3011-24CountryDances_1778_Thompson.ps) >>/Users/jc/w/tmp/Tune-3011-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/TomThumb/24CountryDances_1778_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
Coll_30111.log 697404 Log file, useful mostly for debugging
Coll_30116.log 278710 Log file, useful mostly for debugging
Coll_30119.log 153125 Log file, useful mostly for debugging
Tune-3011-24CountryDances_1778_Thompson.abc 170 ABC music file with the extracted tune(s)
Tune-3011-24CountryDances_1778_Thompson.ps 6 PostScript
Tune-3011-24CountryDances_1778_Thompson.txt 170 Plain-text file with the extracted tune(s)
Tune-3011-get.log 4483 Log file, useful mostly for debugging
Tune-30111-get.log 1333 Log file, useful mostly for debugging
Tune-30116-get.log 1399 Log file, useful mostly for debugging
These files should be available for 24 hours.