Outlook for Mac keeps crashing

Hi, i have a macbook pro running OS X 10.10.1.  In the past Outlook gave me an error that it needs to rebuild database, which would then rebuild the database, and I was able to use outlook.  This happened three times in the past, and consequently i had some emails listed three times, and i was not able to open the attachments to this emails.  So finally yesterday, i deleted my account and setup a fresh account, and everything seems to start working again.  However, since morning today, Outlook is repeatedly crashing with the following error details:

Microsoft Error Reporting log version: 2.0

Error Signature:
Exception: EXC_BAD_ACCESS
Date/Time: 2014-12-30 19:04:50 +0000
Application Name: Microsoft Outlook
Application Bundle ID: com.microsoft.Outlook
Application Signature: OPIM
Application Version: 14.4.7.141117
Crashed Module Name: OutlookCore
Crashed Module Version: 14.4.7.141117
Crashed Module Offset: 0x0026406f
Blame Module Name: OutlookCore
Blame Module Version: 14.4.7.141117
Blame Module Offset: 0x0026406f
Application LCID: 1033
Extra app info: Reg=en Loc=0x0409
Crashed thread: 14

My office is setup thru Office 360 subscription.  Can you please help.

thanks

Saquib