Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/_1001/Kerr_MM3-V2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3670-Kerr_MM3-V2.ps) >>/Users/jc/w/tmp/Tune-3670-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/_1001/Kerr_MM3-V2.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Coll_36702.log 146094 Log file, useful mostly for debugging
Tune-3670-Kerr_MM3-V2.abc 149 ABC music file with the extracted tune(s)
Tune-3670-Kerr_MM3-V2.ps 6 PostScript
Tune-3670-Kerr_MM3-V2.txt 149 Plain-text file with the extracted tune(s)
Tune-3670-get.log 4093 Log file, useful mostly for debugging
Tune-36700-get.log 28193 Log file, useful mostly for debugging
Tune-36701-get.log 1386 Log file, useful mostly for debugging
Tune-36702-get.log 5520 Log file, useful mostly for debugging
Tune-36703-get.log 9582 Log file, useful mostly for debugging
Tune-36708-get.log 5425 Log file, useful mostly for debugging
These files should be available for 24 hours.