2k12 Server Manager abends after upgrading from 2k8

Aloha,

I am upgrading a 2k8 server to 2k12. The upgrade went well but Server Manager now abends the moment I start it.
Please see attachment. There is more info in error box but I can't expand it. Any help is appreciated.

Mahalo,
           Bill
Capture.PNG
Bill CourtneyThe stupid vmware guyAsked:
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Cliff GaliherCommented:
That's a .Net corruption. In place upgrades are often bad when LOB apps are installed. You can try a repair utility. Microsoft has one for dotNet, but it could just as easily break any apps installed. If you can,  build fresh and migrate the data.
Bill CourtneyThe stupid vmware guyAuthor Commented:
I ran this but no help.
Cliff GaliherCommented:
Then you're looking at a rebuild. I can't think of any shortcuts.

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Bill CourtneyThe stupid vmware guyAuthor Commented:
We decided to take that pill. Mahalo for your help.

Bill
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