Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1803/JohnJohnson_ChoiceCollectionVol8-V2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3975-JohnJohnson_ChoiceCollectionVol8-V2.ps) >>/Users/jc/w/tmp/Tune-3975-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1803/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_39757.log 528412 Log file, useful mostly for debugging
Tune-3975-JohnJohnson_ChoiceCollectionVol8-V2.abc 172 ABC music file with the extracted tune(s)
Tune-3975-JohnJohnson_ChoiceCollectionVol8-V2.ps 6 PostScript
Tune-3975-JohnJohnson_ChoiceCollectionVol8-V2.txt 172 Plain-text file with the extracted tune(s)
Tune-3975-get.log 12619 Log file, useful mostly for debugging
Tune-39750-get.log 3126 Log file, useful mostly for debugging
Tune-39751-get.log 20510 Log file, useful mostly for debugging
Tune-39752-get.log 5087 Log file, useful mostly for debugging
Tune-39754-WilliamWinterQuantocks.abc 187 ABC music file with the extracted tune(s)
Tune-39754-WilliamWinterQuantocks.txt 187 Plain-text file with the extracted tune(s)
Tune-39754-get.log 3572 Log file, useful mostly for debugging
Tune-39755-get.log 13573 Log file, useful mostly for debugging
Tune-39756-get.log 9758 Log file, useful mostly for debugging
Tune-39758-get.log 12702 Log file, useful mostly for debugging
Tune-39759-get.log 4847 Log file, useful mostly for debugging
These files should be available for 24 hours.