Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Sources.html/AMHSI-abc1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8130-AMHSI-abc1.ps) >>/Users/jc/w/tmp/Tune-8130-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Sources.html/AMHSI-abc1.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-8130-AMHSI-abc1.abc 155 ABC music file with the extracted tune(s)
Tune-8130-AMHSI-abc1.ps 6 PostScript
Tune-8130-AMHSI-abc1.txt 155 Plain-text file with the extracted tune(s)
Tune-8130-get.log 12488 Log file, useful mostly for debugging
Tune-81300-get.log 1409 Log file, useful mostly for debugging
Tune-81301-get.log 5406 Log file, useful mostly for debugging
Tune-81302-get.log 3184 Log file, useful mostly for debugging
Tune-81304-get.log 5172 Log file, useful mostly for debugging
Tune-81307-get.log 1387 Log file, useful mostly for debugging
Tune-81309-get.log 5920 Log file, useful mostly for debugging
These files should be available for 24 hours.