Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/PDF/JohnFrench.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2317-JohnFrench.ps) >>/Users/jc/w/tmp/Tune-2317-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/PDF/JohnFrench.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Form_23171.log 984 Log file, useful mostly for debugging
Tune-2317-JohnFrench.abc 146 ABC music file with the extracted tune(s)
Tune-2317-JohnFrench.ps 6 PostScript
Tune-2317-JohnFrench.txt 146 Plain-text file with the extracted tune(s)
Tune-2317-get.log 5505 Log file, useful mostly for debugging
Tune-23170-get.log 5155 Log file, useful mostly for debugging
Tune-23171-get.log 5087 Log file, useful mostly for debugging
Tune-23173-get.log 9498 Log file, useful mostly for debugging
Tune-23176-AMHSI_abc1.abc 149 ABC music file with the extracted tune(s)
Tune-23176-AMHSI_abc1.ps 6 PostScript
Tune-23176-AMHSI_abc1.txt 149 Plain-text file with the extracted tune(s)
Tune-23176-get.log 4124 Log file, useful mostly for debugging
Tune-23177-get.log 1379 Log file, useful mostly for debugging
These files should be available for 24 hours.