E:\RockRMS Production\Plugins\rocks_kfs\Crm\PersonAttributeForms.ascx.cs(1689): error CS1061: 'RockDropDownList' does not contain a definition for 'BindToDefinedType' and no accessible extension method 'BindToDefinedType' accepting a first argument of type 'RockDropDownList' could be found (are you missing a using directive or an assembly reference?)
at System.Web.Compilation.BuildManager.CompileWebFile(VirtualPath virtualPath)
at System.Web.Compilation.BuildManager.GetVPathBuildResultInternal(VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile, Boolean throwIfNotFound, Boolean ensureIsUpToDate)
at System.Web.Compilation.BuildManager.GetVPathBuildResultWithNoAssert(HttpContext context, VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile, Boolean throwIfNotFound, Boolean ensureIsUpToDate)
at System.Web.Compilation.BuildManager.GetVPathBuildResult(HttpContext context, VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile, Boolean ensureIsUpToDate)
at System.Web.UI.TemplateControl.LoadControl(VirtualPath virtualPath)
at Rock.Web.UI.RockPage.OnInit(EventArgs e) in \Rock\Web\UI\RockPage.cs:line 1223