Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1794/JamesJohnson_ScotsMusicalMuseumV4-V2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4301-JamesJohnson_ScotsMusicalMuseumV4-V2.ps) >>/Users/jc/w/tmp/Tune-4301-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1794/JamesJohnson_ScotsMusicalMuseumV4-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
Coll_43018.log 277812 Log file, useful mostly for debugging
Find_43013.log 1717 Log file, useful mostly for debugging
Find_43014.log 1815 Log file, useful mostly for debugging
Tune-4301-JamesJohnson_ScotsMusicalMuseumV4-V2.abc 173 ABC music file with the extracted tune(s)
Tune-4301-JamesJohnson_ScotsMusicalMuseumV4-V2.ps 6 PostScript
Tune-4301-JamesJohnson_ScotsMusicalMuseumV4-V2.txt 173 Plain-text file with the extracted tune(s)
Tune-4301-get.log 4610 Log file, useful mostly for debugging
Tune-43014-get.log 1363 Log file, useful mostly for debugging
Tune-43018-Kohlers3.abc 151 ABC music file with the extracted tune(s)
Tune-43018-Kohlers3.ps 6 PostScript
Tune-43018-Kohlers3.txt 151 Plain-text file with the extracted tune(s)
Tune-43018-get.log 4108 Log file, useful mostly for debugging
Tune-43019-get.log 1319 Log file, useful mostly for debugging
These files should be available for 24 hours.