pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9867-3221_General_McKays_Reel.ps) >>/Users/jc/w/tmp/Tune-9867-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CR/3221_General_McKays_Reel.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Coll_98674.log 1109065 Log file, useful mostly for debugging
Coll_98676.log 1276260 Log file, useful mostly for debugging
Tune-9867-3221_General_McKays_Reel.abc 720 ABC music file with the extracted tune(s)
Tune-9867-3221_General_McKays_Reel.ps 37689 PostScript
Tune-9867-3221_General_McKays_Reel.txt 720 Plain-text file with the extracted tune(s)
Tune-9867-get.log 4713 Log file, useful mostly for debugging
Tune-98671-2181_the_Braes_of_Athol.abc 1015 ABC music file with the extracted tune(s)
Tune-98671-2181_the_Braes_of_Athol.txt 1015 Plain-text file with the extracted tune(s)
Tune-98671-get.log 3404 Log file, useful mostly for debugging
Tune-98672-get.log 3281 Log file, useful mostly for debugging
Tune-98673-get.log 4682 Log file, useful mostly for debugging
Tune-98675-get.log 87746 Log file, useful mostly for debugging
These files should be available for 24 hours.