Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1812/v3tune.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-58125-v3tune.ps) >>/Users/jc/w/tmp/Tune-58125-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/1812/v3tune.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-58125-Woodycock_PLFD1651_105.abc 376 ABC music file with the extracted tune(s)
Tune-58125-Woodycock_PLFD1651_105.pdf 16805 Portable Data Format
Tune-58125-Woodycock_PLFD1651_105.ps 32679 PostScript
Tune-58125-Woodycock_PLFD1651_105.txt 376 Plain-text file with the extracted tune(s)
Tune-58125-get.log 10255 Log file, useful mostly for debugging
Tune-58125-v3tune.abc 143 ABC music file with the extracted tune(s)
Tune-58125-v3tune.ps 6 PostScript
Tune-58125-v3tune.txt 143 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.