Hi All,

I have upgraded sucessfully from 7.3.4 to 7.4 but when i browse the site following error is iFinity url is shown

500 Internal Server Error<br>The requested Url (http://.xx.xx.xx/) does not return any valid content.<div style='font-weight:bolder'>Exception:</div><div>Object reference not set to an instance of an object.</div><div style='font-weight:bolder'>Stack Trace:</div><div> at DotNetNuke.Common.Globals.IsEditMode()
at DotNetNuke.Entities.Tabs.TabModulesController.GetModules(TabInfo tab)
at DotNetNuke.Entities.Tabs.TabModulesController.GetTabModules(TabInfo tab)
at DotNetNuke.Entities.Tabs.TabInfo.get_Modules()
at iFinity.DNN.Modules.UrlMaster.Entities.TabInfoEx.Clone(TabInfo tab)
at iFinity.DNN.Modules.UrlMaster.Data.SqlDataProvider.GetTabs(Int32 portalId, Boolean includeAdminTabs, Boolean includeHostTabs, Dictionary`2& customAliasTabs)
at iFinity.DNN.Modules.UrlMaster.UrlMasterController.GetTabs(Int32 portalId, Boolean includeStdUrls, PortalSettings portalSettings, FriendlyUrlSettings settings, Dictionary`2& customAliasTabsForPortal)
at iFinity.DNN.Modules.UrlMaster.UrlMasterController.GetTabs(Int32 portalId, Boolean includeStdUrls, FriendlyUrlSettings settings, Dictionary`2& customAliasTabs)
at iFinity.DNN.Modules.UrlMaster.TabDictController.BuildTabDictionary(PathSizes& pathSizes, FriendlyUrlSettings settings, Int32 buildPortalId, ThreadSafeDictionary`2 tabDict)
at iFinity.DNN.Modules.UrlMaster.TabDictController.FetchTabDictionaryLockable(Int32 portalId, Int32& minTabPathDepth, Int32& maxTabPathDepth, Int32& minAliasPathDepth, Int32& maxAliasPathDepth, FriendlyUrlSettings settings, Boolean forceRebuild, Boolean bypassCache)
at iFinity.DNN.Modules.UrlMaster.TabDictController.FetchTabDictionary(Int32 portalId, Int32& minTabPathDepth, Int32& maxTabPathDepth, Int32& minAliasPathDepth, Int32& maxAliasPathDepth, FriendlyUrlSettings settings, Boolean forceRebuild, Boolean bypassCache)
at iFinity.DNN.Modules.UrlMaster.RewriteController.GetTabFromDictionary(String url, FriendlyUrlSettings settings, UrlAction result)
at iFinity.DNN.Modules.UrlMaster.RewriteController.IdentifyByTabPathEx(String absoluteUri, String queryString, UrlAction result, FriendlyUrlSettings settings)
at iFinity.DNN.Modules.UrlMaster.UrlRewriteModule.CheckForRewrite(String fullUrl, String querystring, UrlAction result, Boolean useFriendlyUrls, NameValueCollection queryStringCol, FriendlyUrlSettings settings, Boolean& isPhysicalResource)

Did anyone encounter this issue.Can someone guide me to resolve this issue