Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/SliabhLuachroOnParade/Gow-CR-abc2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3219-Gow-CR-abc2.ps) >>/Users/jc/w/tmp/Tune-3219-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/SliabhLuachroOnParade/Gow-CR-abc2.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_32199.log 301610 Log file, useful mostly for debugging
Tune-3219-Gow-CR-abc2.abc 165 ABC music file with the extracted tune(s)
Tune-3219-Gow-CR-abc2.ps 6 PostScript
Tune-3219-Gow-CR-abc2.txt 165 Plain-text file with the extracted tune(s)
Tune-3219-get.log 11759 Log file, useful mostly for debugging
Tune-32190-get.log 3536 Log file, useful mostly for debugging
Tune-32193-get.log 4814 Log file, useful mostly for debugging
Tune-32195-get.log 5454 Log file, useful mostly for debugging
These files should be available for 24 hours.