Outlook 2011 Cannot Add Email Account

I am having problems adding an email account onto Outlook 2011. I have a MacBook Pro Retina, 15-inch, late 2013, with OS X Yosemite, version 10.0

I already have one account set up but wanted to add a second.

When this did not work, I created another user account on my computer and tried adding a first account onto Outlook there and the same thing happened.

What happens is that I click on the following path:

Outlook / Preferences / Accounts / Add email account

From clicking "add email account", the programme then freezes.

No spinning wheel appears, but it will not let me click on anything else within Outlook.

I have left the programme for several minutes and have then decided to 'force quit' (none of the toolbar options are clickable).

Please help!!