Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Book04/JamesJohnson_ScotsMusicalMuseumV5-V1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4542-JamesJohnson_ScotsMusicalMuseumV5-V1.ps) >>/Users/jc/w/tmp/Tune-4542-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Book04/JamesJohnson_ScotsMusicalMuseumV5-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
Coll_45427.log 615212 Log file, useful mostly for debugging
Tune-4542-JamesJohnson_ScotsMusicalMuseumV5-V1.abc 175 ABC music file with the extracted tune(s)
Tune-4542-JamesJohnson_ScotsMusicalMuseumV5-V1.ps 6 PostScript
Tune-4542-JamesJohnson_ScotsMusicalMuseumV5-V1.txt 175 Plain-text file with the extracted tune(s)
Tune-4542-get.log 9336 Log file, useful mostly for debugging
Tune-45420-get.log 4038 Log file, useful mostly for debugging
Tune-45422-get.log 4326 Log file, useful mostly for debugging
Tune-45423-get.log 4630 Log file, useful mostly for debugging
Tune-45424-get.log 12035 Log file, useful mostly for debugging
Tune-45426-get.log 9050 Log file, useful mostly for debugging
Tune-45427-get.log 4358 Log file, useful mostly for debugging
Tune-45429-get.log 7172 Log file, useful mostly for debugging
These files should be available for 24 hours.