Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/HUTB2/CMCIT.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2240-CMCIT.ps) >>/Users/jc/w/tmp/Tune-2240-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/HUTB2/CMCIT.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-2240-CMCIT.abc 143 ABC music file with the extracted tune(s)
Tune-2240-CMCIT.ps 6 PostScript
Tune-2240-CMCIT.txt 143 Plain-text file with the extracted tune(s)
Tune-2240-get.log 12018 Log file, useful mostly for debugging
Tune-22401-24CountryDances_1802_Thompson.abc 165 ABC music file with the extracted tune(s)
Tune-22401-24CountryDances_1802_Thompson.ps 6 PostScript
Tune-22401-24CountryDances_1802_Thompson.txt 165 Plain-text file with the extracted tune(s)
Tune-22401-get.log 9297 Log file, useful mostly for debugging
Tune-22404-get.log 3332 Log file, useful mostly for debugging
Tune-22407-get.log 9466 Log file, useful mostly for debugging
Tune-22408-get.log 5867 Log file, useful mostly for debugging
Tune-22409-get.log 3362 Log file, useful mostly for debugging
These files should be available for 24 hours.