pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2666-ashover.ps) >>/Users/jc/w/tmp/Tune-2666-get.log 2>&1" returned status 256
http://abc.sourceforge.net/NMD/nmd/ashover.txt

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.60 512x512 PNG]
filesizedescription
Tune-2666-ashover.abc 384 ABC music file with the extracted tune(s)
Tune-2666-ashover.ps 34369 PostScript
Tune-2666-ashover.txt 384 Plain-text file with the extracted tune(s)
Tune-2666-get.log 4164 Log file, useful mostly for debugging
Tune-26666-get.log 3582 Log file, useful mostly for debugging
Tune-26667-get.log 3955 Log file, useful mostly for debugging
Tune-26669-get.log 2352 Log file, useful mostly for debugging
These files should be available for 24 hours.