Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/GftF/slurs.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8673-slurs.ps) >>/Users/jc/w/tmp/Tune-8673-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/GftF/slurs.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-8673-get.log 3963 Log file, useful mostly for debugging
Tune-8673-slurs.abc 142 ABC music file with the extracted tune(s)
Tune-8673-slurs.ps 6 PostScript
Tune-8673-slurs.txt 142 Plain-text file with the extracted tune(s)
Tune-86732-get.log 75547 Log file, useful mostly for debugging
Tune-86733-get.log 9943 Log file, useful mostly for debugging
Tune-86735-get.log 3698 Log file, useful mostly for debugging
Tune-86737-get.log 3184 Log file, useful mostly for debugging
Tune-86739-get.log 4570 Log file, useful mostly for debugging
These files should be available for 24 hours.