Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/SliabhLuachroOnParade/cont.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2534-cont.ps) >>/Users/jc/w/tmp/Tune-2534-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/SliabhLuachroOnParade/cont.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-2534-cont.abc 158 ABC music file with the extracted tune(s)
Tune-2534-cont.ps 6 PostScript
Tune-2534-cont.txt 158 Plain-text file with the extracted tune(s)
Tune-2534-get.log 4040 Log file, useful mostly for debugging
Tune-25341-get.log 3559 Log file, useful mostly for debugging
Tune-25342-get.log 4003 Log file, useful mostly for debugging
Tune-25344-get.log 3230 Log file, useful mostly for debugging
Tune-25345-get.log 4379 Log file, useful mostly for debugging
Tune-25346-get.log 11537 Log file, useful mostly for debugging
Tune-25348-get.log 4886 Log file, useful mostly for debugging
Tune-25349-get.log 4705 Log file, useful mostly for debugging
These files should be available for 24 hours.