X:447 not found in http://lesters-tune-a-day.blogspot.com/2016/04/tune-447-white-cockade.html
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-11504-tune-447-white-cockade.ps) >>/Users/jc/w/tmp/Tune-11504-get.log 2>&1" returned status 256
http://lesters-tune-a-day.blogspot.com/2016/04/tune-447-white-cockade.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
Tune-11504-MM1-V1.abc 480 ABC music file with the extracted tune(s)
Tune-11504-MM1-V1.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-11504-MM1-V1.ps 34855 PostScript
Tune-11504-MM1-V1.txt 480 Plain-text file with the extracted tune(s)
Tune-11504-get.log 96899 Log file, useful mostly for debugging
Tune-11504-tune-447-white-cockade.abc 0 ABC music file with the extracted tune(s)
Tune-11504-tune-447-white-cockade.ps 6 PostScript
Tune-11504-tune-447-white-cockade.txt 0 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.