pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-77466-DwrGlan.ps) >>/Users/jc/w/tmp/Tune-77466-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/abc/Scotland/reel/DwrGlan.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.65 512x512 PNG]
filesizedescription
Tune-77466-DwrGlan.abc 556 ABC music file with the extracted tune(s)
Tune-77466-DwrGlan.ps 35495 PostScript
Tune-77466-DwrGlan.txt 556 Plain-text file with the extracted tune(s)
Tune-77466-get.log 4872 Log file, useful mostly for debugging
These files should be available for 24 hours.