Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1762/JohnJohnson_ChoiceCollectionVol8-V2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2581-JohnJohnson_ChoiceCollectionVol8-V2.ps) >>/Users/jc/w/tmp/Tune-2581-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1762/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
Tune-2581-JohnJohnson_ChoiceCollectionVol8-V2.abc 172 ABC music file with the extracted tune(s)
Tune-2581-JohnJohnson_ChoiceCollectionVol8-V2.ps 6 PostScript
Tune-2581-JohnJohnson_ChoiceCollectionVol8-V2.txt 172 Plain-text file with the extracted tune(s)
Tune-2581-get.log 13151 Log file, useful mostly for debugging
Tune-25811-get.log 4053 Log file, useful mostly for debugging
Tune-25812-get.log 5988 Log file, useful mostly for debugging
Tune-25815-get.log 4373 Log file, useful mostly for debugging
Tune-25816-get.log 3986 Log file, useful mostly for debugging
Tune-25817-get.log 3504 Log file, useful mostly for debugging
Tune-25818-get.log 5642 Log file, useful mostly for debugging
Tune-25819-get.log 12147 Log file, useful mostly for debugging
These files should be available for 24 hours.