Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/FtFIoD/endo.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2578-endo.ps) >>/Users/jc/w/tmp/Tune-2578-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/FtFIoD/endo.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_25782.log 632773 Log file, useful mostly for debugging
Tune-2578-endo.abc 143 ABC music file with the extracted tune(s)
Tune-2578-endo.ps 6 PostScript
Tune-2578-endo.txt 143 Plain-text file with the extracted tune(s)
Tune-2578-get.log 3952 Log file, useful mostly for debugging
These files should be available for 24 hours.