If you are experiencing issues with MS Outlook 2010, one of the first things you should try is disable add-ins as they often are reason for Outlook crashes and other problems.

First of all disable all of them and if problem is solved, re-enable one by one until you find the offending add-in.

1. Click on File
2. Open Options
3. Click on Add-Ins. At the bottom, in Manage drop-down select COM-Add-Ins and click Go
   
   
4. To disable Add-In, uncheck the check-box next to each add-in name and click OK
   If you are sure that add-in is no longer needed you can select the add-in and click Remove to completely remove it from the system.
   
5. Restart Outlook.