Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/AmericanSD/JohnJohnson_ChoiceCollectionVol8-V1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1367-JohnJohnson_ChoiceCollectionVol8-V1.ps) >>/Users/jc/w/tmp/Tune-1367-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/AmericanSD/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_1367.log 156467 Log file, useful mostly for debugging
Tune-1367-JohnJohnson_ChoiceCollectionVol8-V1.abc 178 ABC music file with the extracted tune(s)
Tune-1367-JohnJohnson_ChoiceCollectionVol8-V1.ps 6 PostScript
Tune-1367-JohnJohnson_ChoiceCollectionVol8-V1.txt 178 Plain-text file with the extracted tune(s)
Tune-1367-get.log 8953 Log file, useful mostly for debugging
Tune-13670-get.log 4432 Log file, useful mostly for debugging
Tune-13674-get.log 4960 Log file, useful mostly for debugging
Tune-13675-get.log 5240 Log file, useful mostly for debugging
Tune-13679-get.log 4847 Log file, useful mostly for debugging
These files should be available for 24 hours.