Excel Add Sheet or Overwrite if Exists - vba

Question

In excel I have a macro that converts all of columns of an active sheet into an new sheet called "MasterList"
My problem is when I rerun that macro I get an error saying "That name is already taken." Try a different one.
I need my macro to overwrite MaterList sheet if it already exists.
Here is my code:
Sub ToArrayAndBack()
Dim arr As Variant, lLoop1 As Long, lLoop2 As Long
Dim arr2 As Variant, lIndex As Long
'turn off updates to speed up code execution
With Application
.ScreenUpdating = False
.EnableEvents = False
.Calculation = xlCalculationManual
.DisplayAlerts = False
End With
ReDim arr2(ActiveSheet.UsedRange.Cells.Count - ActiveSheet.UsedRange.SpecialCells(xlCellTypeBlanks).Count)
arr = ActiveSheet.UsedRange.Value
For lLoop1 = LBound(arr, 1) To UBound(arr, 1)
For lLoop2 = LBound(arr, 2) To UBound(arr, 2)
If Len(Trim(arr(lLoop1, lLoop2))) > 0 Then
arr2(lIndex) = arr(lLoop1, lLoop2)
lIndex = lIndex + 1
End If
Next
Next
Sheets.Add.Name = "MasterList"
Range("A1").Resize(, lIndex + 1).Value = arr2
Range("A1").Resize(, lIndex + 1).Copy
Range("A2").Resize(lIndex + 1).PasteSpecial Transpose:=True
Rows(1).Delete
With Application
.ScreenUpdating = True
.EnableEvents = True
.Calculation = xlCalculationAutomatic
.DisplayAlerts = True
End With
End Sub

Answer 1

You can put the sheet creation between on error resume and on error goto 0. The other solution is to loop through the workbook sheets collection and check if a sheet with that name exists.
Solution 1:
On Error Resume Next
Sheets.Add.Name = "MasterList"
On Error GoTo 0
Solution 2:
Dim ws As Worksheet
Dim found As Boolean
found = False
For Each ws In ThisWorkbook.Sheets
If ws.Name = "MasterList" Then
found = True
Exit For
EndIf
Next
If Not found Then
Sheets.Add.Name = "MasterList"
EndIf
To avoid relying on the fact that MasterList is active:
Set ws = ThisWorkbook.Sheets("MasterList")
With ws
.Range("A1").Resize(, lIndex + 1).Value = arr2
.Range("A1").Resize(, lIndex + 1).Copy
.Range("A2").Resize(lIndex + 1).PasteSpecial Transpose:=True
.Rows(1).Delete
End With