Options (ECP) in Exchange 2010 OWA not working, Unexpected error.

I have an Exchange 2010 server where the options (ECP) is not working.  In OWA when I click on options then "see all options" I get:
Unexpected Error
An error occurred and your request couldn't be completed. Please try again.

I have removed and re-added CAS.
I have verified all the IIS settings against another known working exchange server in a different network. I don't see any differences.
I have recreated the virtual directories using EMC.

Themes in the options work so it seems as if some of the ECP items are working.

Aside from removing and re-installing the entire exchange role I am at a loss.
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Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:

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jpgillivanConsultantAuthor Commented:
The second link referencing  to go to c:\windows\system32 and run lodctr /R.  Then I did an iisreset /noforce.  I had to manually restart World Wide Web Publishing.  After that ECP worked again.

I had tried to run the lodcrt /R command previously with no success, but that was before reinstalling CAS.
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