Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/lament/Kerr_MM2-V1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2771-Kerr_MM2-V1.ps) >>/Users/jc/w/tmp/Tune-2771-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/lament/Kerr_MM2-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-2771-Kerr_MM2-V1.abc 150 ABC music file with the extracted tune(s)
Tune-2771-Kerr_MM2-V1.ps 6 PostScript
Tune-2771-Kerr_MM2-V1.txt 150 Plain-text file with the extracted tune(s)
Tune-2771-get.log 12672 Log file, useful mostly for debugging
Tune-27710-get.log 4369 Log file, useful mostly for debugging
Tune-27711-get.log 4257 Log file, useful mostly for debugging
Tune-27716-get.log 4541 Log file, useful mostly for debugging
Tune-27718-get.log 4863 Log file, useful mostly for debugging
Tune-27719-get.log 4583 Log file, useful mostly for debugging
These files should be available for 24 hours.