I have the same problem and also posted today.
This won't fix your problem but at least you'll be able to open it and see
your message, but the layout will just be a bit different.

Right click the icon on your task bar, then left click ... selecting close.
You now want to open outlook in safe mode.  This is done by pressing (and
holding) the ctrl key while you open outlook.  It'll ask if you want to open
in safemode.  Click yes.

It's possible that this might allow you to open it normally after trying
this, but it hasn't helped for me, but at least it will open in safe mode.
Diana