Cannot log in to nuke. Having some problem with AspNetMembershipProvider
2015-04-10 16:42:23,159 [gis][Thread:9][ERROR] DotNetNuke.Services.Exceptions.Exceptions - ~/Default.aspx?tabid=1091&error=terminate
System.NullReferenceException: Object reference not set to an instance of an object.
at DotNetNuke.Security.Membership.AspNetMembershipProvider.UpdateUserMembership(UserInfo user)
at DotNetNuke.Security.Membership.AspNetMembershipProvider.UpdateUser(UserInfo user)
at DotNetNuke.Entities.Users.UserController.UpdateUser(Int32 portalId, UserInfo user, Boolean loggedAction, Boolean clearCache)
at DotNetNuke.Entities.Users.UserController.UserLogin(Int32 portalId, UserInfo user, String portalName, String ip, Boolean createPersistentCookie)
at DotNetNuke.Modules.Admin.Authentication.Login.ValidateUser(UserInfo objUser, Boolean ignoreExpiring)
at DotNetNuke.Modules.Admin.Authentication.Login.UserAuthenticated(Object sender, UserAuthenticatedEventArgs e)
at DotNetNuke.Modules.Admin.Authentication.Login.OnLoginClick(Object sender, EventArgs e)
at System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String eventArgument)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
2015-04-10 16:42:23,174 [gis][Thread:9][ERROR] DotNetNuke.Services.Exceptions.Exceptions - DotNetNuke.Services.Exceptions.PageLoadException: Object reference not set to an instance of an object. ---> System.NullReferenceException: Object reference not set to an instance of an object.
at DotNetNuke.Security.Membership.AspNetMembershipProvider.UpdateUserMembership(UserInfo user)
at DotNetNuke.Security.Membership.AspNetMembershipProvider.UpdateUser(UserInfo user)
at DotNetNuke.Entities.Users.UserController.UpdateUser(Int32 portalId, UserInfo user, Boolean loggedAction, Boolean clearCache)
at DotNetNuke.Entities.Users.UserController.UserLogin(Int32 portalId, UserInfo user, String portalName, String ip, Boolean createPersistentCookie)
at DotNetNuke.Modules.Admin.Authentication.Login.ValidateUser(UserInfo objUser, Boolean ignoreExpiring)
at DotNetNuke.Modules.Admin.Authentication.Login.UserAuthenticated(Object sender, UserAuthenticatedEventArgs e)
at DotNetNuke.Modules.Admin.Authentication.Login.OnLoginClick(Object sender, EventArgs e)
at System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String eventArgument)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
--- End of inner exception stack trace ---