Outlook crash and sends error report repeatedly. How do i solve it?

Laptop: Macbook Pro OSX Yosemite 10.10.5 (14F27)

Microsoft outlook version: 2011 mac version.

Latest installed update 14.5.5

Error Signature:
Exception: EXC_CRASH (SIGTRAP)
Date/Time: 2015-09-09 09:11:11 +0000
Application Name: Microsoft Outlook
Application Bundle ID: com.microsoft.Outlook
Application Signature: OPIM
Application Version: 14.5.5.150821
Crashed Module Name: merp
Crashed Module Version: 2.2.4.150821
Crashed Module Offset: 0x00004422
Blame Module Name: Microsoft Outlook
Blame Module Version: 14.5.5.150821
Blame Module Offset: 0x003d2b20
Application LCID: 1033
Extra app info: Reg=en Loc=0x0409
Crashed thread: 11

Error Signature:
Exception: EXC_CRASH (SIGTRAP)
Date/Time: 2015-09-09 09:11:11 +0000
Application Name: Microsoft Outlook
Application Bundle ID: com.microsoft.Outlook
Application Signature: OPIM
Application Version: 14.5.5.150821
Crashed Module Name: merp
Crashed Module Version: 2.2.4.150821
Crashed Module Offset: 0x00004422
Blame Module Name: Microsoft Outlook
Blame Module Version: 14.5.5.150821
Blame Module Offset: 0x003d2b20
Application LCID: 1033
Extra app info: Reg=en Loc=0x0409
Crashed thread: 11