Can't View Customer Details?

Hi

I have just come across a strange problem.

A person has just signed up for an account with my zencart. She hasn't bought anything yet, just set up the account.

She is listed un my customers in the admin 'home page' when you see the new customers. When I go to the list of customers in admin, I can see her there, then click on her for for information, I get no details. I can see her name in the list just fine, but don't get any details in the grey box to the right of the screen. Then when I click on the edit button to get all her information, I get blank boxes.

I can see other customers just fine, it;s just her.

Any ideas what is going on?

(ZenCart 139d)

Thanks

Paul

I have just been into the database via phpMyAdmin, and all her details are there, and look[*] like they are fine.

[ * I know v. little about databases]

But, I still can't see her details in admin.

Paul