I recently upgraded Sugarcrm 4.51to Sugarcrm Version 5.0.0b (Build 3150) .

Since the upgrade all "Create" views stopped working. Whenever I call
- Create Contact
- Create Case
- Create Lead
etc.
I only see a blank view on the right of the navigation panel with he header "contacts", "leads", etc. in bold letters. But there are no fields to actually enter any data and to create a new dataset.
Views like "Enter Business Card" work fine.

I use Internet Explorer 6.0 (unfortunatelty mandatory at work).

I could not find any bug related to this problem or any other user complaining about this.
Any idea what could cause this and how it can be fixed?

Cheers
Thomas