Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/polka/Urbani_Liston_1800.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1993-Urbani_Liston_1800.ps) >>/Users/jc/w/tmp/Tune-1993-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/polka/Urbani_Liston_1800.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_19936.log 1551 Log file, useful mostly for debugging
Tune-1993-Urbani_Liston_1800.abc 156 ABC music file with the extracted tune(s)
Tune-1993-Urbani_Liston_1800.ps 6 PostScript
Tune-1993-Urbani_Liston_1800.txt 156 Plain-text file with the extracted tune(s)
Tune-1993-get.log 4236 Log file, useful mostly for debugging
Tune-19934-get.log 7702 Log file, useful mostly for debugging
Tune-19935-get.log 4325 Log file, useful mostly for debugging
These files should be available for 24 hours.