Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/100_Popular_HRJCD/Kerr_MM3-V2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3856-Kerr_MM3-V2.ps) >>/Users/jc/w/tmp/Tune-3856-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/100_Popular_HRJCD/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
Find_38563.log 1470 Log file, useful mostly for debugging
Find_38566.log 1559 Log file, useful mostly for debugging
Tune-3856-Kerr_MM3-V2.abc 161 ABC music file with the extracted tune(s)
Tune-3856-Kerr_MM3-V2.ps 6 PostScript
Tune-3856-Kerr_MM3-V2.txt 161 Plain-text file with the extracted tune(s)
Tune-3856-get.log 4163 Log file, useful mostly for debugging
Tune-38560-get.log 3801 Log file, useful mostly for debugging
Tune-38564-get.log 4226 Log file, useful mostly for debugging
Tune-38565-get.log 5066 Log file, useful mostly for debugging
Tune-38566-get.log 30315 Log file, useful mostly for debugging
These files should be available for 24 hours.