Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/misc/JohnJohnson_ChoiceCollectionVol8-V1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4699-JohnJohnson_ChoiceCollectionVol8-V1.ps) >>/Users/jc/w/tmp/Tune-4699-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/misc/JohnJohnson_ChoiceCollectionVol8-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
Tune-4699-JohnJohnson_ChoiceCollectionVol8-V1.abc 172 ABC music file with the extracted tune(s)
Tune-4699-JohnJohnson_ChoiceCollectionVol8-V1.ps 6 PostScript
Tune-4699-JohnJohnson_ChoiceCollectionVol8-V1.txt 172 Plain-text file with the extracted tune(s)
Tune-4699-get.log 9093 Log file, useful mostly for debugging
Tune-46990-get.log 8987 Log file, useful mostly for debugging
Tune-46991-get.log 3902 Log file, useful mostly for debugging
Tune-46992-get.log 16298 Log file, useful mostly for debugging
Tune-46993-get.log 3917 Log file, useful mostly for debugging
Tune-46994-get.log 16602 Log file, useful mostly for debugging
Tune-46995-Tune-69353-24CountryDances_1770.abc 183 ABC music file with the extracted tune(s)
Tune-46995-Tune-69353-24CountryDances_1770.txt 183 Plain-text file with the extracted tune(s)
Tune-46995-get.log 12268 Log file, useful mostly for debugging
Tune-46998-get.log 13231 Log file, useful mostly for debugging
Tune-46999-get.log 9723 Log file, useful mostly for debugging
These files should be available for 24 hours.