Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Graded1/slurs.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4024-slurs.ps) >>/Users/jc/w/tmp/Tune-4024-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Graded1/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
Form_40243.log 1038 Log file, useful mostly for debugging
Tune-4024-get.log 9217 Log file, useful mostly for debugging
Tune-4024-slurs.abc 145 ABC music file with the extracted tune(s)
Tune-4024-slurs.ps 6 PostScript
Tune-4024-slurs.txt 145 Plain-text file with the extracted tune(s)
Tune-40241-get.log 13071 Log file, useful mostly for debugging
Tune-40242-get.log 5433 Log file, useful mostly for debugging
Tune-40243-get.log 9356 Log file, useful mostly for debugging
Tune-40245-get.log 88113 Log file, useful mostly for debugging
Tune-40246-get.log 3428 Log file, useful mostly for debugging
These files should be available for 24 hours.