Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1750/JohnJohnson_ChoiceCollectionVol8-V1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-112-JohnJohnson_ChoiceCollectionVol8-V1.ps) >>/Users/jc/w/tmp/Tune-112-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1750/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-112-JohnJohnson_ChoiceCollectionVol8-V1.abc 172 ABC music file with the extracted tune(s)
Tune-112-JohnJohnson_ChoiceCollectionVol8-V1.ps 6 PostScript
Tune-112-JohnJohnson_ChoiceCollectionVol8-V1.txt 172 Plain-text file with the extracted tune(s)
Tune-112-get.log 7646 Log file, useful mostly for debugging
Tune-11202-get.log 4923 Log file, useful mostly for debugging
Tune-11204-get.log 3504 Log file, useful mostly for debugging
Tune-11212-get.log 5447 Log file, useful mostly for debugging
Tune-11214-get.log 3826 Log file, useful mostly for debugging
Tune-1123-get.log 4844 Log file, useful mostly for debugging
Tune-11231-get.log 4045 Log file, useful mostly for debugging
Tune-11239-get.log 4172 Log file, useful mostly for debugging
Tune-11241-get.log 4492 Log file, useful mostly for debugging
Tune-11247-get.log 5012 Log file, useful mostly for debugging
Tune-1126-get.log 3528 Log file, useful mostly for debugging
Tune-11260-get.log 4072 Log file, useful mostly for debugging
Tune-11265-get.log 3600 Log file, useful mostly for debugging
Tune-11269-get.log 4363 Log file, useful mostly for debugging
Tune-11270-get.log 4513 Log file, useful mostly for debugging
Tune-11275-get.log 5471 Log file, useful mostly for debugging
Tune-11276-get.log 4072 Log file, useful mostly for debugging
Tune-11286-get.log 5638 Log file, useful mostly for debugging
Tune-11291-get.log 5033 Log file, useful mostly for debugging
These files should be available for 24 hours.