I have this CMS called Ektron CMS400. I created a custom membership provider to handle validating and creating users against our own membership database, separate from Ektron's database. When I ran an upgrade, everything went OK, but now when users try to log in, they get an "Object not set to an instance of an object" error on these lines in my web.config:
<providers>
<clear/>
<add name="MyMembershipProvider" type="MyMembershipProvider" connectionStringName="MyMembership.DbConnection" requiresQuestionAndAnswer="false"/>
<add name= Go to the complete details ...