Your bug report

#16377: Undo Tree regression: (error "Unrecognized entry in undo list undo-tree-canary")

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 16377@debbugs.gnu.org.

-- 
16377: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=16377
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