pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-53804-DukeOfKent_C6.ps) >>/Users/jc/w/tmp/Tune-53804-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/abc/Scotland/reel/DukeOfKent_C6.abc

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.65 512x512 PNG]
filesizedescription
Tune-53804-DukeOfKent_C6.abc 794 ABC music file with the extracted tune(s)
Tune-53804-DukeOfKent_C6.ps 38297 PostScript
Tune-53804-DukeOfKent_C6.txt 794 Plain-text file with the extracted tune(s)
Tune-53804-get.log 4457 Log file, useful mostly for debugging
These files should be available for 24 hours.