Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Book21/JamesJohnson_ScotsMusicalMuseumV5-V1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2845-JamesJohnson_ScotsMusicalMuseumV5-V1.ps) >>/Users/jc/w/tmp/Tune-2845-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Book21/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_28457.log 625012 Log file, useful mostly for debugging
Find_28452.log 1519 Log file, useful mostly for debugging
Tune-2845-JamesJohnson_ScotsMusicalMuseumV5-V1.abc 175 ABC music file with the extracted tune(s)
Tune-2845-JamesJohnson_ScotsMusicalMuseumV5-V1.ps 6 PostScript
Tune-2845-JamesJohnson_ScotsMusicalMuseumV5-V1.txt 175 Plain-text file with the extracted tune(s)
Tune-2845-get.log 4624 Log file, useful mostly for debugging
Tune-28450-get.log 5300 Log file, useful mostly for debugging
Tune-28452-get.log 3512 Log file, useful mostly for debugging
Tune-28453-get.log 9527 Log file, useful mostly for debugging
Tune-28455-get.log 5435 Log file, useful mostly for debugging
Tune-28456-get.log 4476 Log file, useful mostly for debugging
Tune-28457-get.log 10034 Log file, useful mostly for debugging
Tune-28458-get.log 4909 Log file, useful mostly for debugging
These files should be available for 24 hours.