or

I know that this is not the exact wording of the pop-ups and drop-downs.
I get a drop-down from Telerik in visual studio stating that there is a new update; I select ok. Even if I go and update the project from the menu bar, I get the error when I run up the page. Sometimes I will see the issue right when looking at the page in design mode.
The way I have been fixing the issue, delete the reference and reassociate the Telerik reference. I believe that then the project is not using he newest Telerik controls.
I have no custom skins or controls.
Error:
Sys.Application.add_init(function() {
$create(Telerik.Web.UI.RadToolTip, {"_cssClass":"","_manualCloseButtonText":"Close","clientStateFieldID":"ctl00_ctl00_ContentPlaceholder1_MiddleColumn_ctl00_CandidateListGrid_ctl00_ctl04_MessageUSGToolTip_ctl00_ClientState","formID":"aspnetForm","relativeTo":1,"skin":"USGFOEXTelerik","targetControlID":"ctl00_ctl00_ContentPlaceholder1_MiddleColumn_ctl00_CandidateListGrid_ctl00_ctl04_MessageImage","text":"Dit is een bericht verkregen uit hercules:\u003cbr /\u003ede status is ToValidate"}, null, null, $get("ctl00_ctl00_ContentPlaceholder1_MiddleColumn_ctl00_CandidateListGrid_ctl00_ctl04_MessageUSGToolTip_ctl00"));
});
public class DateTimeColumn : GridBoundColumn { #region Fields SPField _field; const string _TRACECONST = "ECSpand.SharePoint.UI.WebUserControls.RecordsOrganizer.FileContent.Columns.DateTimeColumn"; SPDateTimeFieldFormatType _formatType = SPDateTimeFieldFormatType.DateTime; private RadDatePicker _datePickerFrom; private RadDatePicker _datePickerTo; #endregion #region Constructor () public DateTimeColumn() { } #endregion #region Constructor (field) public DateTimeColumn(SPField field) { this.AllowSorting = true; this.DataField = field.Id.ToString(); this.HeaderText = field.Title; this.HeaderTooltip = ""; _field = field; this.SortExpression = field.Id.ToString(); SPFieldDateTime dtField = field as SPFieldDateTime; if (dtField != null) { _formatType = dtField.DisplayFormat; } } #endregion #region Methods #region FormatDataValue (dataValue, item) protected override string FormatDataValue(object dataValue, GridItem item) { if (_field == null) return dataValue.ToString(); string s = dataValue as string; if (!string.IsNullOrEmpty(s)) { try { SPWeb web = SPContext.Current.Web; SPRegionalSettings settings = web.RegionalSettings; if (web.CurrentUser.RegionalSettings != null) { settings = web.CurrentUser.RegionalSettings; } DateTime time; if (s.Contains('T') || s.Contains('Z')) { time = DateTime.Parse(s, CultureInfo.InvariantCulture); } else { time = DateTime.ParseExact(s, "yyyy-MM-dd HH:mm:ss", CultureInfo.InvariantCulture); } if (_formatType == SPDateTimeFieldFormatType.DateOnly) { return time.ToShortDateString(); } else { return Microsoft.SharePoint.Utilities.SPUtility.FormatDate(SPContext.Current.Web, time.ToUniversalTime(), Microsoft.SharePoint.Utilities.SPDateFormat.DateTime); } } catch (Exception ex) { Log.WriteWarning("DateTime-Field '" + _field.InternalName + "' could not be parsed. Value was + '" + dataValue as string + "'. Exception was : " + ex.ToString(), _TRACECONST); return dataValue as string; } } return "-"; } #endregion #region SetupFilterControls (cell) /// <summary> /// RadGrid will call this method when it initializes the controls inside the filtering item cells /// </summary> /// <param name="cell">The TableCell</param> protected override void SetupFilterControls(System.Web.UI.WebControls.TableCell cell) { base.SetupFilterControls(cell); if (cell.Controls.Count > 0) cell.Controls.RemoveAt(0); //cell.Style.Add(HtmlTextWriterStyle.WhiteSpace, "nowrap"); _datePickerFrom = new RadDatePicker(); //_datePickerFrom.ID = "ColumnFilterDateFrom" + Guid.NewGuid().ToString(); _datePickerFrom.AutoPostBack = true; _datePickerFrom.Skin = "Office2007"; _datePickerFrom.SelectedDateChanged += new Telerik.Web.UI.Calendar.SelectedDateChangedEventHandler(_datePicker_SelectedDateChanged); _datePickerFrom.ShowPopupOnFocus = true; _datePickerFrom.Width = Unit.Pixel(100); _datePickerFrom.EnableScreenBoundaryDetection = false; _datePickerFrom.DatePopupButton.ToolTip = string.Empty; _datePickerFrom.Style.Add(HtmlTextWriterStyle.MarginRight, "5px"); _datePickerFrom.EnableTyping = false; _datePickerTo = new RadDatePicker(); _datePickerTo.ID = "ColumnFilterDateFrom" + Guid.NewGuid().ToString(); _datePickerTo.AutoPostBack = true; _datePickerTo.Skin = "Office2007"; _datePickerTo.SelectedDateChanged += new Telerik.Web.UI.Calendar.SelectedDateChangedEventHandler(_datePicker_SelectedDateChanged); _datePickerTo.ShowPopupOnFocus = true; _datePickerTo.Width = Unit.Pixel(100); _datePickerTo.EnableScreenBoundaryDetection = false; _datePickerTo.DatePopupButton.ToolTip = string.Empty; _datePickerTo.Style.Add(HtmlTextWriterStyle.MarginRight, "5px"); _datePickerTo.EnableTyping = false; ImageButton resetfilterbutton = new ImageButton(); if (!string.IsNullOrEmpty(this.CurrentFilterValue) && this.CurrentFilterFunction != GridKnownFunction.NoFilter) resetfilterbutton.ImageUrl = "/_layouts/images/ecspand/filter_remove_green.png"; else resetfilterbutton.Visible = false; resetfilterbutton.Width = Unit.Pixel(16); resetfilterbutton.Height = Unit.Pixel(16); resetfilterbutton.Click += new ImageClickEventHandler(resetfilterbutton_Click); cell.Controls.AddAt(0, _datePickerFrom); cell.Controls.AddAt(1, _datePickerTo); cell.Controls.AddAt(2, resetfilterbutton); if (cell.Controls.Count > 3) cell.Controls.RemoveAt(3); } #endregion #region _datePicker_SelectedDateChanged (sender, e) private void _datePicker_SelectedDateChanged(object sender, Telerik.Web.UI.Calendar.SelectedDateChangedEventArgs e) { GridFilteringItem filterItem = (GridFilteringItem)((RadDatePicker)sender).NamingContainer; try { if (_datePickerFrom.SelectedDate != null && _datePickerTo.SelectedDate == null) _datePickerTo.SelectedDate = _datePickerFrom.SelectedDate.Value.AddHours(12); if (_datePickerFrom.SelectedDate != null && _datePickerTo.SelectedDate != null) { filterItem.FireCommandEvent("Filter", new Pair(GridKnownFunction.Between.ToString(), this.UniqueName)); } else filterItem.FireCommandEvent("Filter", new Pair("NoFilter", this.UniqueName)); } catch { } } #endregion #region resetfilterbutton_Click (sender, e) /// <summary> /// Handles the Click event of the resetbutton to reset the current column filter. /// </summary> /// <param name="sender">The sender</param> /// <param name="e">The ImageClickEventArgs</param> private void resetfilterbutton_Click(object sender, ImageClickEventArgs e) { if (_datePickerFrom != null) { this.CurrentFilterValue = string.Empty; this.CurrentFilterFunction = GridKnownFunction.NoFilter; GridFilteringItem filterItem = (GridFilteringItem)((RadDatePicker)_datePickerFrom).NamingContainer; filterItem.FireCommandEvent("Filter", new Pair("NoFilter", this.UniqueName)); } } #endregion #region GetCurrentFilterValueFromControl (cell) /// <summary> /// RadGrid will call this method when the filtering value should be extracted from the filtering input control(s) /// </summary> /// <param name="cell">The TableCell</param> /// <returns>The current filter value</returns> protected override string GetCurrentFilterValueFromControl(TableCell cell) { if (_datePickerFrom.SelectedDate != null) { string data = string.Format("{0} {1}", _datePickerFrom.SelectedDate.Value, _datePickerTo.SelectedDate.Value); return data; } else return string.Empty; } #endregion #region SetCurrentFilterValueToControl (cell) /// <summary> /// RadGrid will call this method when the value should be set to the filtering input control(s) /// </summary> /// <param name="cell">The TableCell</param> protected override void SetCurrentFilterValueToControl(TableCell cell) { if (_datePickerFrom != null) { base.SetCurrentFilterValueToControl(cell); if (!string.IsNullOrEmpty(this.CurrentFilterValue)) { _datePickerFrom.SelectedDate = this.GetDateTimeValueFormCurrentFilterValue(this.CurrentFilterValue); } } } #endregion #region GetDateTimeValueFormCurrentFilterValue (value) private DateTime? GetDateTimeValueFormCurrentFilterValue(string value) { DateTime? retval = null; if (!string.IsNullOrEmpty(value)) { DateTime tmp = DateTime.MinValue; if (DateTime.TryParse(value, out tmp)) retval = Convert.ToDateTime(tmp); } return retval; } #endregion #endregion }