Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Book08/JamesJohnson_ScotsMusicalMuseumV5-V2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2340-JamesJohnson_ScotsMusicalMuseumV5-V2.ps) >>/Users/jc/w/tmp/Tune-2340-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Book08/JamesJohnson_ScotsMusicalMuseumV5-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-2340-JamesJohnson_ScotsMusicalMuseumV5-V2.abc 175 ABC music file with the extracted tune(s)
Tune-2340-JamesJohnson_ScotsMusicalMuseumV5-V2.ps 6 PostScript
Tune-2340-JamesJohnson_ScotsMusicalMuseumV5-V2.txt 175 Plain-text file with the extracted tune(s)
Tune-2340-get.log 9007 Log file, useful mostly for debugging
Tune-23400-Goulding_SSEIFA_v3.abc 158 ABC music file with the extracted tune(s)
Tune-23400-Goulding_SSEIFA_v3.ps 6 PostScript
Tune-23400-Goulding_SSEIFA_v3.txt 158 Plain-text file with the extracted tune(s)
Tune-23400-get.log 859302 Log file, useful mostly for debugging
Tune-23401-get.log 9169 Log file, useful mostly for debugging
Tune-23402-get.log 3548 Log file, useful mostly for debugging
Tune-23404-get.log 7317 Log file, useful mostly for debugging
Tune-23406-get.log 3128 Log file, useful mostly for debugging
Tune-23408-get.log 4465 Log file, useful mostly for debugging
Tune-23409-get.log 3898 Log file, useful mostly for debugging
These files should be available for 24 hours.