Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Book27/v3tune.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4620-v3tune.ps) >>/Users/jc/w/tmp/Tune-4620-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Book27/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-4620-get.log 3992 Log file, useful mostly for debugging
Tune-4620-v3tune.abc 145 ABC music file with the extracted tune(s)
Tune-4620-v3tune.ps 6 PostScript
Tune-4620-v3tune.txt 145 Plain-text file with the extracted tune(s)
Tune-46200-ThomasMarsden.abc 150 ABC music file with the extracted tune(s)
Tune-46200-ThomasMarsden.pdf 2217 Portable Data Format
Tune-46200-ThomasMarsden.txt 150 Plain-text file with the extracted tune(s)
Tune-46200-get.log 4993 Log file, useful mostly for debugging
Tune-46204-PaulBackstrom-LfD.abc 152 ABC music file with the extracted tune(s)
Tune-46204-PaulBackstrom-LfD.ps 6 PostScript
Tune-46204-PaulBackstrom-LfD.txt 152 Plain-text file with the extracted tune(s)
Tune-46204-get.log 4128 Log file, useful mostly for debugging
Tune-46209-get.log 5435 Log file, useful mostly for debugging
These files should be available for 24 hours.