Hi folks! VB dummy here... :)

As the subject line says, I get this error almost every time I make
changes involving column D4-D13 (the first IF statement)

Can anyone offer some advice?

Thanks!
Craig

~~~snip~~~
Private Sub Worksheet_Change(ByVal Target As Excel.Range)

If Not Intersect(Target, Range("D4:D13")) Is Nothing Then
Application.EnableEvents = False
Range(Cells(Target.Row, "D"), Cells(13, "D")).Value = Target
Application.EnableEvents = True
End If

If Not Intersect(Target, Range("e4:e13")) Is Nothing Then
Application.EnableEvents = False
Range(Cells(Target.Row, "e"), Cells(13, "e")).Value = Target
Application.EnableEvents = True
End If

If Target.HasFormula = False Then
Target.Value = UCase(Target.Value)
End If

Dim TimeStr As String

On Error GoTo EndMacro
If Application.Intersect(Target, Range("C4")) Is Nothing Then
Exit Sub
End If
If Target.Cells.Count 1 Then
Exit Sub
End If
If Target.Value = "" Then
Exit Sub
End If

Application.EnableEvents = False
With Target
If .HasFormula = False Then
Select Case Len(.Value)
Case 1 ' e.g., 1 = 00:01 AM
TimeStr = "00:0" & .Value
Case 2 ' e.g., 12 = 00:12 AM
TimeStr = "00:" & .Value
Case 3 ' e.g., 735 = 7:35 AM
TimeStr = Left(.Value, 1) & ":" & _
Right(.Value, 2)
Case 4 ' e.g., 1234 = 12:34
TimeStr = Left(.Value, 2) & ":" & _
Right(.Value, 2)
Case 5 ' e.g., 12345 = 1:23:45 NOT 12:03:45
TimeStr = Left(.Value, 1) & ":" & _
Mid(.Value, 2, 2) & ":" & Right(.Value, 2)
Case 6 ' e.g., 123456 = 12:34:56
TimeStr = Left(.Value, 2) & ":" & _
Mid(.Value, 3, 2) & ":" & Right(.Value, 2)
Case Else
Err.Raise 0
End Select
.Value = TimeValue(TimeStr)
End If
End With
Application.EnableEvents = True
Exit Sub
EndMacro:
MsgBox "You did not enter a valid time"
Application.EnableEvents = True
End Sub