I upgraded my site from 4.6.2 to 4.7.0. I am getting unusual results. My site has four portals, each with its own domain name. (All were working as expected prior to upgrade.) After the upgrade three of the four give server errors and the fourth works some of the time and at other times shows the .../Install/UnderConstruction.htm page.
Any ideas would be greatly appreciated...
The three that give server errors give the following error:
Server Error in '/' Application.
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Object reference not set to an instance of an object.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:
[NullReferenceException: Object reference not set to an instance of an object.]
DotNetNuke.UI.Skins.SkinDefaults..ctor(SkinDefaultType DefaultType) +189
DotNetNuke.Common.Globals.get_DefaultSkin() +31
DotNetNuke.Entities.Portals.PortalSettings.GetPortalSettings(Int32 TabId, PortalAliasInfo objPortalAliasInfo) +2763
DotNetNuke.Entities.Portals.PortalSettings..ctor(Int32 tabId, PortalAliasInfo objPortalAliasInfo) +83
DotNetNuke.HttpModules.UrlRewriteModule.OnBeginRequest(Object s, EventArgs e) +2897
System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +92
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +64
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Version Information: Microsoft .NET Framework Version:2.0.50727.832; ASP.NET Version:2.0.50727.832