Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Book41/JamesJohnson_ScotsMusicalMuseumV4-V2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5327-JamesJohnson_ScotsMusicalMuseumV4-V2.ps) >>/Users/jc/w/tmp/Tune-5327-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Book41/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
Tune-5327-JamesJohnson_ScotsMusicalMuseumV4-V2.abc 175 ABC music file with the extracted tune(s)
Tune-5327-JamesJohnson_ScotsMusicalMuseumV4-V2.ps 6 PostScript
Tune-5327-JamesJohnson_ScotsMusicalMuseumV4-V2.txt 175 Plain-text file with the extracted tune(s)
Tune-5327-get.log 8918 Log file, useful mostly for debugging
Tune-53270-get.log 8559 Log file, useful mostly for debugging
Tune-53271-get.log 3698 Log file, useful mostly for debugging
Tune-53273-get.log 8053 Log file, useful mostly for debugging
Tune-53274-get.log 7603 Log file, useful mostly for debugging
Tune-53276-get.log 4562 Log file, useful mostly for debugging
Tune-53277-get.log 3080 Log file, useful mostly for debugging
Tune-53278-get.log 4535 Log file, useful mostly for debugging
Tune-53279-get.log 14561 Log file, useful mostly for debugging
These files should be available for 24 hours.