Upgrading to 6.15 crashed Outlook

[tzackin 1]

I am running version 6.14.5.7671 (Build ce-48.0.5483).  When I upgraded to version 6.15 Outlook stopped working (my OST file got corrupted).  I had to do a System Restore to fix the problem.  I don't even use the Outlook features.  I wanted to report this but also to find out if there is a way to prevent Evernote from installing its Outlook add-in which is unnecessary for me.  Thanks.