Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1793/JohnJohnson_ChoiceCollectionVol8-V2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3861-JohnJohnson_ChoiceCollectionVol8-V2.ps) >>/Users/jc/w/tmp/Tune-3861-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1793/JohnJohnson_ChoiceCollectionVol8-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
Coll_38615.log 567612 Log file, useful mostly for debugging
Tune-3861-JohnJohnson_ChoiceCollectionVol8-V2.abc 172 ABC music file with the extracted tune(s)
Tune-3861-JohnJohnson_ChoiceCollectionVol8-V2.ps 6 PostScript
Tune-3861-JohnJohnson_ChoiceCollectionVol8-V2.txt 172 Plain-text file with the extracted tune(s)
Tune-3861-get.log 9067 Log file, useful mostly for debugging
Tune-38610-get.log 4967 Log file, useful mostly for debugging
Tune-38611-Hamilton_HUTB2-1846-V1.abc 187 ABC music file with the extracted tune(s)
Tune-38611-Hamilton_HUTB2-1846-V1.txt 187 Plain-text file with the extracted tune(s)
Tune-38611-get.log 10339 Log file, useful mostly for debugging
Tune-38613-get.log 7756 Log file, useful mostly for debugging
Tune-38614-get.log 12394 Log file, useful mostly for debugging
Tune-38615-get.log 11033 Log file, useful mostly for debugging
Tune-38618-get.log 7789 Log file, useful mostly for debugging
Tune-38619-get.log 17848 Log file, useful mostly for debugging
These files should be available for 24 hours.