Thanks You quick replay.
When I am exporting kentico Version 8 website using Wizard getting the following error.
Message: Method not found: 'System.Collections.Generic.IList`1 CMS.DataEngine.ObjectHelper.GetDependencyColumnNames(System.String, System.String)'.
"Exception type: System.MissingMethodException
Stack Trace:
at CMS.CMSImportExport.SiteExportSettings.GetDependingObjectWhere(String objectType, QueryDataParameters parameters, SelectConditionList condList, GeneralizedInfo infoObj, String siteWhere)
at CMS.CMSImportExport.SiteExportSettings.LoadDefaultSelection(String objectType, Boolean siteObjects, ExportTypeEnum exportType, Boolean loadObjects, Boolean loadTasks)
at CMS.CMSImportExport.SiteExportSettings.LoadDefaultSelection(Boolean loadAdditionalSettings)
at CMS.CMSImportExport.SiteExportSettings.LoadDefaultSelection()
at CMSModules_ImportExport_Controls_ExportWizard.SelectObjects(Object parameter) in c:\inetpub\wwwroot\kentico6\CMS\CMSModules\ImportExport\Controls\ExportWizard.ascx.cs:line 612
at CMS.UIControls.AsyncWorker.Run()"