Stack trace:
at System.Net.Cookie.VerifySetDefaults(CookieVariant variant, Uri uri, Boolean isLocalDomain, String localDomain, Boolean set_default, Boolean isThrow)
at System.Net.CookieContainer.Add(Cookie cookie)
at System.Net.CookieContainer.Add(CookieCollection cookies)
at CMS.SiteProvider.SearchHelper.GetCrawlerCookieContainer(String user, String url)
at CMS.SiteProvider.SearchHelper.CreateRequest(String url)
at CMS.SiteProvider.SearchHelper.DownloadHtmlContent(String url)
at CMS.DocumentEngine.TreeNode.GetSearchDocument(ISearchIndexInfo info)
at CMS.DocumentEngine.DocumentEngineModule.GetSearchDocuments(Object[] parameters)