X:551 not found in http://lesters-tune-a-day.blogspot.co.uk/2013/06/tune-278-willow-tree-bucknell.html
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-85364-tune-278-willow-tree-bucknell.ps) >>/Users/jc/w/tmp/Tune-85364-get.log 2>&1" returned status 256
http://lesters-tune-a-day.blogspot.co.uk/2013/06/tune-278-willow-tree-bucknell.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-85364-get.log 4888 Log file, useful mostly for debugging
Tune-85364-tune-278-willow-tree-bucknell.abc 0 ABC music file with the extracted tune(s)
Tune-85364-tune-278-willow-tree-bucknell.ps 6 PostScript
Tune-85364-tune-278-willow-tree-bucknell.txt 0 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.