Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/reel/JamesJohnson_ScotsMusicalMuseumV4-V1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1336-JamesJohnson_ScotsMusicalMuseumV4-V1.ps) >>/Users/jc/w/tmp/Tune-1336-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/reel/JamesJohnson_ScotsMusicalMuseumV4-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_13363.log 291810 Log file, useful mostly for debugging
Tune-1336-JamesJohnson_ScotsMusicalMuseumV4-V1.abc 173 ABC music file with the extracted tune(s)
Tune-1336-JamesJohnson_ScotsMusicalMuseumV4-V1.ps 6 PostScript
Tune-1336-JamesJohnson_ScotsMusicalMuseumV4-V1.txt 173 Plain-text file with the extracted tune(s)
Tune-1336-get.log 9110 Log file, useful mostly for debugging
Tune-13362-24CountryDances_1778_Thompson.abc 167 ABC music file with the extracted tune(s)
Tune-13362-24CountryDances_1778_Thompson.pdf 2217 Portable Data Format
Tune-13362-24CountryDances_1778_Thompson.ps 6 PostScript
Tune-13362-24CountryDances_1778_Thompson.txt 167 Plain-text file with the extracted tune(s)
Tune-13362-get.log 5441 Log file, useful mostly for debugging
Tune-13365-get.log 5348 Log file, useful mostly for debugging
Tune-13366-get.log 4365 Log file, useful mostly for debugging
Tune-13367-get.log 9307 Log file, useful mostly for debugging
Tune-13369-get.log 3564 Log file, useful mostly for debugging
These files should be available for 24 hours.