Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1798/JohnJohnson_ChoiceCollectionVol8-V1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4303-JohnJohnson_ChoiceCollectionVol8-V1.ps) >>/Users/jc/w/tmp/Tune-4303-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1798/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
Coll_43038.log 159067 Log file, useful mostly for debugging
Tune-4303-JohnJohnson_ChoiceCollectionVol8-V1.abc 172 ABC music file with the extracted tune(s)
Tune-4303-JohnJohnson_ChoiceCollectionVol8-V1.ps 6 PostScript
Tune-4303-JohnJohnson_ChoiceCollectionVol8-V1.txt 172 Plain-text file with the extracted tune(s)
Tune-4303-get.log 4593 Log file, useful mostly for debugging
Tune-43032-get.log 6929 Log file, useful mostly for debugging
Tune-43033-Button_Whitaker_SelectionOfDancesReelsAndWaltzes_1.abc 187 ABC music file with the extracted tune(s)
Tune-43033-Button_Whitaker_SelectionOfDancesReelsAndWaltzes_1.ps 6 PostScript
Tune-43033-Button_Whitaker_SelectionOfDancesReelsAndWaltzes_1.txt 187 Plain-text file with the extracted tune(s)
Tune-43033-get.log 15617 Log file, useful mostly for debugging
Tune-43036-get.log 18612 Log file, useful mostly for debugging
Tune-43037-get.log 5321 Log file, useful mostly for debugging
Tune-43038-get.log 4739 Log file, useful mostly for debugging
Tune-43039-get.log 8591 Log file, useful mostly for debugging
These files should be available for 24 hours.