Outlook CRM Add-in throws NULL exception when I want to track emails.

Today I have installed latest version of CRM Add-in for Outlook and Outlook itself but everytime I want to track an email in CRM, I get an null exception.

Any one has a clue on how to debug this problem??

************** Exception Text **************

System.NullReferenceException: Object reference not set to an instance of an object.

   at Microsoft.Crm.Outlook.TrackInCrmRegion.AddRegardingRow(OutlookItemWrapper item)

   at Microsoft.Crm.Outlook.TrackInCrmRegion.CreateRegularUI(OutlookItemWrapper item)

   at Microsoft.Crm.Outlook.TrackInCrmRegion.CreateUI()

   at Microsoft.Crm.Application.Outlook.AsyncConditionalControl.EndUpdateOnCondition(Boolean result)

   at Microsoft.Crm.Application.Outlook.AsyncConditionalControl.<BeginUpdateOnCondition>d__27.MoveNext()

--- End of stack trace from previous location where exception was thrown ---

   at System.Runtime.CompilerServices.AsyncMethodBuilderCore.<>c.<ThrowAsync>b__6_0(Object state)