With the generous help of someone in another forum i was shown exactly what table to retrieve the error report from the DB. Below is what i did.

With the offending DNN Data base execute the following...
select top(100)* from EventLog order by LogCreateDate DESC

Which returned this results:
--- ERROR BELOW --------------
LogProperties ModuleId-1ModuleDefId-1FriendlyNameModuleControlSourceAssemblyVersion6.2.8PortalID0PortalNameMyDomainUserID-1UserNameActiveTabID36ActiveTabNameHomeRawURL/Default.aspx?tabid=36&error=An%20unexpected%20error%20has%20occurredAbsoluteURL/Default.aspxAbsoluteURLReferrerhttp://www.MyDomainName.com/UserAgentMozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/28.0.1500.95 Safari/537.36DefaultDataProviderDotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProviderExceptionGUID3178c997-8244-4e37-8d18-e88560612d59InnerExceptionMethod not found: 'System.Collections.Hashtable DotNetNuke.Services.Authentication.AuthenticationConfigBase.get_ModuleSettings()'.FileNameFileLineNumber0FileColumnNumber0MethodDotNetNuke.Authentication.LiveID.Config..ctorStackTraceMessageDotNetNuke.Services.Exceptions.ModuleLoadException: Method not found: 'System.Collections.Hashtable DotNetNuke.Services.Authentication.AuthenticationConfigBase.get_ModuleSettings()'. ---> System.MissingMethodException: Method not found: 'System.Collections.Hashtable DotNetNuke.Services.Authentication.AuthenticationConfigBase.get_ModuleSettings()'. at DotNetNuke.Authentication.LiveID.Config..ctor(Int32 portalId) at DotNetNuke.Authentication.LiveID.Config.GetConfig(Int32 portalId) at DotNetNuke.Authentication.LiveID.Login.get_Enabled() at DotNetNuke.UI.Skins.Controls.Login.<HasSocialAuthenticationEnabled>b__1(AuthenticationInfo a) at System.Linq.Enumerable.WhereSelectListIterator`2.MoveNext() at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext() at System.Linq.Enumerable.Any[TSource](IEnumerable`1 source) at DotNetNuke.UI.Skins.Controls.Login.HasSocialAuthenticationEnabled() at DotNetNuke.UI.Skins.Controls.Login.OnLoad(EventArgs e) --- End of inner exception stack trace ---Source
--- END ERROR --------

Which led me to a link given to me by another DNN user at:

http://www.dnnsoftware.com/community-...

Unfortunately, after further review, while i have located the Authentication table, i'm unable to locate  the following and remove both the lines that reference Cardspace and ActiveDirectory.

Still trying to resolve.... DNN 6.2.8 Authentication table does not appear to have these tables.

Does any of this look familiar to anyone? Anyone else have such upgrade headaches as getting the default login screen back and working?

I initially installed these sites from scratch years ago.... and now we are upgrading to DNN 6.2.8 for now Not ready for 7.x

In regards to CardSpace and or ActiveDirectory on the web site... the answer is "No" they are not installed.

In regards to Authentication.LiveID, I did not install this either. Just noticed the error upon upgrade which initially showed no errors in the upgrade wizard. I am not sure how to remove Authentication.LiveID, from DB or from the Site.

I too was hoping that 6.2.8 fixed this issue a long time ago... but i cannot move on until i get the default login page back.

I've tried almost everything.... and nothing is working... It is frustrating that the Upgrade went smoothly but i can't login to the site by link or by url.

Again, solutions and leads to fixes still welcome.... my DNN sites are on "Life Support"