Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/101SCD/JohnJohnson_ChoiceCollectionVol8-VMP.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7918-JohnJohnson_ChoiceCollectionVol8-VMP.ps) >>/Users/jc/w/tmp/Tune-7918-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/101SCD/JohnJohnson_ChoiceCollectionVol8-VMP.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Find_79189.log 1717 Log file, useful mostly for debugging
Form_7918.abc 819 ABC music file with the extracted tune(s)
Form_7918.log 1115 Log file, useful mostly for debugging
Form_7918_001.svg 40286 Scalable Vector Graphics format
Tune-7918-JohnJohnson_ChoiceCollectionVol8-VMP.abc 175 ABC music file with the extracted tune(s)
Tune-7918-JohnJohnson_ChoiceCollectionVol8-VMP.ps 6 PostScript
Tune-7918-JohnJohnson_ChoiceCollectionVol8-VMP.txt 175 Plain-text file with the extracted tune(s)
Tune-7918-get.log 4620 Log file, useful mostly for debugging
Tune-79180-get.log 4440 Log file, useful mostly for debugging
Tune-79181-get.log 5740 Log file, useful mostly for debugging
Tune-79189-get.log 5657 Log file, useful mostly for debugging
These files should be available for 24 hours.