After the recent update to v14.5.0, Outlook for Mac (Office 2011 installed on MacOS 10.10.3) stopped displaying the main screens upon opening - no inbox, calendar, etc. and the launch bar icon no longer shows message counts or new email.  There is no obvious way to open these windows (nothing in the Window menu) and some menus won't even pull down (e.g., sometimes the View menu just stops working)

I have tried both rebuilding the Office Database and deleting the preferences files in the Library directory, rebooting, etc.  Various Internet search have neither revealed exactly these symptoms nor problems relating to this recent update.  I was only able to repair the issue by reinstalling Office entirely (vs. just Outlook). The new install worked for 2 days and then failed again with the same symptoms.

There is no issue with the exchange server - I can retrieve my email, calendars, etc. from the web interface.

Any help appreciated.