Blank Email Address Format - Cannot add to policy

Hi All,

I have a strange problem with my Exchange setup (new install) in which I cannot edit or add to email address policies. The address format column is blank (see imageI cannot add Images yet will update when I can). When I try to save the policy anyway hoping it was just a display issue I get the following error: "MultiValuedProperty collections cannot contain null values. Parameter name: item"

Any help would be appreciated.

Thanks!