Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/AB/JohnJohnson_ChoiceCollectionVol8-V1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5594-JohnJohnson_ChoiceCollectionVol8-V1.ps) >>/Users/jc/w/tmp/Tune-5594-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/AB/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
Form_55940.log 980 Log file, useful mostly for debugging
Tune-5594-JohnJohnson_ChoiceCollectionVol8-V1.abc 170 ABC music file with the extracted tune(s)
Tune-5594-JohnJohnson_ChoiceCollectionVol8-V1.ps 6 PostScript
Tune-5594-JohnJohnson_ChoiceCollectionVol8-V1.txt 170 Plain-text file with the extracted tune(s)
Tune-5594-get.log 4575 Log file, useful mostly for debugging
Tune-55941-get.log 5446 Log file, useful mostly for debugging
Tune-55942-get.log 4050 Log file, useful mostly for debugging
Tune-55948-Urbani_Liston_1800.abc 155 ABC music file with the extracted tune(s)
Tune-55948-Urbani_Liston_1800.ps 6 PostScript
Tune-55948-Urbani_Liston_1800.txt 155 Plain-text file with the extracted tune(s)
Tune-55948-get.log 4161 Log file, useful mostly for debugging
These files should be available for 24 hours.