Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1804/Kerr_MM4-V1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2115-Kerr_MM4-V1.ps) >>/Users/jc/w/tmp/Tune-2115-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/1804/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
Tune-2115-Kerr_MM4-V1.abc 148 ABC music file with the extracted tune(s)
Tune-2115-Kerr_MM4-V1.ps 6 PostScript
Tune-2115-Kerr_MM4-V1.txt 148 Plain-text file with the extracted tune(s)
Tune-2115-get.log 9890 Log file, useful mostly for debugging
Tune-21150-24CountryDances_1776_Randall.abc 165 ABC music file with the extracted tune(s)
Tune-21150-24CountryDances_1776_Randall.ps 6 PostScript
Tune-21150-24CountryDances_1776_Randall.txt 165 Plain-text file with the extracted tune(s)
Tune-21150-get.log 10343 Log file, useful mostly for debugging
Tune-21151-get.log 3715 Log file, useful mostly for debugging
Tune-21153-get.log 5477 Log file, useful mostly for debugging
Tune-21155-get.log 5674 Log file, useful mostly for debugging
Tune-21157-get.log 4560 Log file, useful mostly for debugging
These files should be available for 24 hours.