CRM 2007 UI: Blank screen after selecting the profile

Dear all,

we installed CRM 2007 UI with the newest components.

After selecting one of the standard roles just a blank screen appears.

We checked all the notes and questions here:

- The profile parameter in RZ11 are set

- The services according to the notes are active

- We set browser security to low

- All relevant ports are open

- User role and profile is assigned to organizational unit

Still nothing. I know that others had this problem?

Have you come up with a solution?

Thanks

Andreas