Will and Chris

This is the error I mentioned, several times in the Event Log.  I did only a SQL backup from DDN database less time before...(on the same server)

AssemblyVersion: 5.5.1
PortalID: -1
PortalName:
UserID: -1
UserName:
ActiveTabID: -1
ActiveTabName:
RawURL: /Default.aspx
AbsoluteURL: /Default.aspx
AbsoluteURLReferrer: http://www.hermsen.net/Default.aspx
UserAgent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; InfoPath.3; .NET4.0C; Media Center PC 6.0)
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
ExceptionGUID: 7dde3d67-8065-4a4d-a952-db854ca7c7f4
InnerException: Object reference not set to an instance of an object.
FileName:
FileLineNumber: 0
FileColumnNumber: 0
Method: DotNetNuke.Entities.Portals.PortalSettings.VerifyPortalTab
StackTrace:
Message: 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.Entities.Portals.PortalSettings.VerifyPortalTab(Int32 PortalId, Int32 TabId) at DotNetNuke.Entities.Portals.PortalSettings.GetPortalSettings(Int32 tabID, PortalInfo portal) at DotNetNuke.HttpModules.UrlRewriteModule.OnBeginRequest(Object s, EventArgs e) at System.Web.HttpApplication.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) --- End of inner exception stack trace ---
Source:
Server Name: VPS-

Really I have no idea whats happened here

Checked several sites...ALL set

Very strange conclusion on several websites with several skins within 1 DotNetNuke portal !

Firefox 3.6.10  All website works
IE 8  Non Website works !
Google Chrome 6 latest update  NON website works !

tried Ctrl+F5  IE8 and Chrome on several sites, still the same error "An error has occurred."  Go back to the Site !!!

Desperate ?