Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1754/endo.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7103-endo.ps) >>/Users/jc/w/tmp/Tune-7103-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/1754/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
Tune-7103-endo.abc 141 ABC music file with the extracted tune(s)
Tune-7103-endo.ps 6 PostScript
Tune-7103-endo.txt 141 Plain-text file with the extracted tune(s)
Tune-7103-get.log 12350 Log file, useful mostly for debugging
Tune-71030-get.log 5262 Log file, useful mostly for debugging
Tune-71033-get.log 3272 Log file, useful mostly for debugging
Tune-71034-get.log 4489 Log file, useful mostly for debugging
Tune-71035-get.log 1411 Log file, useful mostly for debugging
Tune-71037-get.log 4477 Log file, useful mostly for debugging
These files should be available for 24 hours.