AX is not allowing to register EP site manually.

Hi,

I restored Production database on my development db. Hence I was changing all the configurations in AX which should point to development related servers.

For EP, in System administration -> Enterprise Portal -> Websites screen, I deleted the existing production EP site entry and trying to add a newer one for Development EP portal. but now It is throwing error.

Server was unable to process request. ---> Object reference not set to an instance of an object.

Last time I faced this, but as it was urgent I reinstalled Enterprise Portal for development which registered site itself. but this seems to be ongoing problem now.

How to get rid of this? Has anyone faced this before?

I am using AX 2012 R2 CU7

Kindly help. Thanks.