pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1062-priests13.ps) >>/Users/jc/w/tmp/Tune-1062-get.log 2>&1" returned status 256
http://cbladey.com/sang/priests13.html

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.60 512x512 PNG]
filesizedescription
Coll_10624.log 139782 Log file, useful mostly for debugging
Form_1062.log 829 Log file, useful mostly for debugging
Form_10626.log 853 Log file, useful mostly for debugging
Tune-1062-get.log 9390 Log file, useful mostly for debugging
Tune-1062-priests13.abc 370 ABC music file with the extracted tune(s)
Tune-1062-priests13.ps 30909 PostScript
Tune-1062-priests13.txt 370 Plain-text file with the extracted tune(s)
Tune-10622-get.log 0 Log file, useful mostly for debugging
Tune-10623-get.log 3614 Log file, useful mostly for debugging
Tune-10627-get.log 3059 Log file, useful mostly for debugging
These files should be available for 24 hours.