Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Children/Pioneer.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1214-Pioneer.ps) >>/Users/jc/w/tmp/Tune-1214-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Children/Pioneer.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-1214-Pioneer.abc 148 ABC music file with the extracted tune(s)
Tune-1214-Pioneer.ps 6 PostScript
Tune-1214-Pioneer.txt 148 Plain-text file with the extracted tune(s)
Tune-1214-get.log 4027 Log file, useful mostly for debugging
Tune-12142-get.log 5501 Log file, useful mostly for debugging
Tune-12143-get.log 4260 Log file, useful mostly for debugging
Tune-12144-get.log 4044 Log file, useful mostly for debugging
Tune-12146-get.log 4514 Log file, useful mostly for debugging
Tune-12148-get.log 32625 Log file, useful mostly for debugging
These files should be available for 24 hours.