Upgraded from DDN 7.3.4 to 7.4.0 with no errors reported during the upgrade. When trying to access site now though receive 500 error.
Getting this in the logs, Any help on what it might be?
2015-02-05 12:44:42,802 [holly][Thread:9][FATAL] DotNetNuke.Web.Common.Internal.DotNetNukeHttpApplication - System.FormatException: Input string was not in a correct format.
at System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal)
at System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info)
at System.String.System.IConvertible.ToInt32(IFormatProvider provider)
at System.Convert.ChangeType(Object value, Type conversionType, IFormatProvider provider)
at DotNetNuke.Collections.CollectionExtensions.ConvertValue[T](Object value)
at DotNetNuke.Collections.CollectionExtensions.GetValueOrDefault[T](IDictionary dictionary, String key, T defaultValue, Func`2 converter)
at DotNetNuke.Collections.CollectionExtensions.GetValueOrDefault[T](IDictionary dictionary, String key, T defaultValue)
at DotNetNuke.Entities.Portals.PortalSettingsController.LoadPortalSettings(PortalSettings portalSettings)
at DotNetNuke.Entities.Portals.PortalSettings.BuildPortalSettings(Int32 tabId, PortalInfo portal)
at DotNetNuke.Entities.Portals.PortalSettings..ctor(Int32 tabId, PortalAliasInfo portalAliasInfo)
at DotNetNuke.HttpModules.UrlRewrite.BasicUrlRewriter.RewriteUrl(Object sender, EventArgs e)
at System.Web.HttpApplication.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)