Mail Merge In Outlook Client No Longer Works after UR 15

I'm working on getting my users updated to UR 15 and found that the mail merge no longer works in the Outlook client after updating to UR 15.  To test this, I tried out the mail merge on a user who had UR 13 and it worked.  Updated them to UR 15 and the mail merge no longer works.  When you click on the mail merge button nothing happens.  Don't get any errors when you click it. Just wondering if anyone else out there is experiencing the same thing or if it is just us.

Thanks
Jennifer