Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1794/JamesJohnson_ScotsMusicalMuseumV5-V2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7352-JamesJohnson_ScotsMusicalMuseumV5-V2.ps) >>/Users/jc/w/tmp/Tune-7352-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1794/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-7352-JamesJohnson_ScotsMusicalMuseumV5-V2.abc 173 ABC music file with the extracted tune(s)
Tune-7352-JamesJohnson_ScotsMusicalMuseumV5-V2.ps 6 PostScript
Tune-7352-JamesJohnson_ScotsMusicalMuseumV5-V2.txt 173 Plain-text file with the extracted tune(s)
Tune-7352-get.log 4612 Log file, useful mostly for debugging
Tune-73521-get.log 7590 Log file, useful mostly for debugging
Tune-73522-ViolaRuth_Pioneer.abc 160 ABC music file with the extracted tune(s)
Tune-73522-ViolaRuth_Pioneer.ps 6 PostScript
Tune-73522-ViolaRuth_Pioneer.txt 160 Plain-text file with the extracted tune(s)
Tune-73522-get.log 4176 Log file, useful mostly for debugging
Tune-73527-24CountryDances_1771_Thompson.abc 166 ABC music file with the extracted tune(s)
Tune-73527-24CountryDances_1771_Thompson.txt 166 Plain-text file with the extracted tune(s)
Tune-73527-get.log 3528 Log file, useful mostly for debugging
These files should be available for 24 hours.