Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Graded1/Kerr_MM4-V1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2517-Kerr_MM4-V1.ps) >>/Users/jc/w/tmp/Tune-2517-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Graded1/Kerr_MM4-V1.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Find_25172.log 1837 Log file, useful mostly for debugging
Tune-2517-Kerr_MM4-V1.abc 151 ABC music file with the extracted tune(s)
Tune-2517-Kerr_MM4-V1.ps 6 PostScript
Tune-2517-Kerr_MM4-V1.txt 151 Plain-text file with the extracted tune(s)
Tune-2517-get.log 8571 Log file, useful mostly for debugging
Tune-25172-get.log 6616 Log file, useful mostly for debugging
Tune-25173-get.log 4374 Log file, useful mostly for debugging
Tune-25176-get.log 6373 Log file, useful mostly for debugging
Tune-25179-get.log 5430 Log file, useful mostly for debugging
These files should be available for 24 hours.