Run time error 13 advise please

[ipbr21054]

Hi.
Today ive come across Run time error 13 on my worksheet.
SEE ATTACHED SCREENSHOTS TO ASSIS YOU

Clicking in cekk K4 i see this code in the address bar =SUM(#REF!:OFFSET(K28,,0))

The code in use is supplied below
When i debug the line in red below is shown in yellow

Private Sub Worksheet_SelectionChange(ByVal Target As Range) ' THIS WILL COLOUR ACTIVE CELL & KEEP INTERIOR COLOUR ONCE LEFT HAS BEEN LEFT
    Dim myStartCol As String
    Dim myEndCol As String
    Dim myStartRow As Long
    Dim myLastRow As Long
    Dim myRange As Range

    If Target.Cells.Count > 1 Then Exit Sub
    If Target.Value = "NEVER" Or Target.Value = "TBA" Or Target.Value Like "2###" Then Exit Sub


    Application.ScreenUpdating = False
   
'   *** Specify columns to apply this to ***
    myStartCol = "A"
    myEndCol = "K"

'   *** Specify start row ***
    myStartRow = 7
   
'   Use first column to find the last row
    myLastRow = Cells(Rows.Count, myStartCol).End(xlUp).Row
   
'   Build range to apply this to
    Set myRange = Range(Cells(myStartRow, myStartCol), Cells(myLastRow, myEndCol))
   
    '   Check to see if cell selected is outside of range
    If Intersect(Target, myRange) Is Nothing Then Exit Sub
   
    With Target
        .Worksheet.Cells.FormatConditions.Delete
        .FormatConditions.Add xlExpression, , True
        .FormatConditions(1).Interior.Color = vbWhite
    End With
   
    With Sheet7.DTPicker1
    .Height = 40
    .Width = 40
    If Not Intersect(Target, Range("G7:H40")) Is Nothing Then
      .Visible = True
      .Top = Target.Top
      .Left = Target.Offset(0, 1).Left
      .LinkedCell = Target.ADDRESS
    Else
      .Visible = False
    End If
  End With
     
End Sub

DOWNLOAD SAMPLE HERE

Its supposed to shown a outstanding balance in cell K4

 

[RoryA]

You need to handle error values in cells separately. What do you want to happen if the cell contains an error? Exit the routine?

 

[ipbr21054]

I need to see a balance but if there is an issue at least be advised of it.

I think the code in cell K4 should be =SUM(K7:OFFSET(K35,,0))

Then apply what you were thinking of
Thanks

 

[RoryA]

That doesn't really answer my question. If the formula in the cell were valid, you wouldn't have the problem, so the question is what you want the code to do in this case? It's not going to fix that formula unless you can specify the logic for how it should handle any formula errors.

 

[ipbr21054]

Not sure how i should answr that.
Can we have a MsgBox ?
Or advise an option please