Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1780/JohnJohnson_ChoiceCollectionVol8-V1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6547-JohnJohnson_ChoiceCollectionVol8-V1.ps) >>/Users/jc/w/tmp/Tune-6547-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/1780/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_6547.log 422012 Log file, useful mostly for debugging
Coll_65473.log 161666 Log file, useful mostly for debugging
Coll_65474.log 157767 Log file, useful mostly for debugging
Tune-6547-JohnJohnson_ChoiceCollectionVol8-V1.abc 172 ABC music file with the extracted tune(s)
Tune-6547-JohnJohnson_ChoiceCollectionVol8-V1.ps 6 PostScript
Tune-6547-JohnJohnson_ChoiceCollectionVol8-V1.txt 172 Plain-text file with the extracted tune(s)
Tune-6547-get.log 4589 Log file, useful mostly for debugging
Tune-65470-get.log 4145 Log file, useful mostly for debugging
Tune-65472-get.log 12079 Log file, useful mostly for debugging
Tune-65473-get.log 5433 Log file, useful mostly for debugging
Tune-65479-get.log 4523 Log file, useful mostly for debugging
These files should be available for 24 hours.