Ron, same error, here is the complete code:

Sub Copy_With_AdvancedFilter_To_Worksheets()
Dim CalcMode As Long
Dim ws1 As Worksheet
Dim WSNew As Worksheet
Dim rng As Range
Dim cell As Range
Dim Lrow As Long

Set ws1 = Sheets("POLOG") '<<< Change
'Tip : Use a Dynamic range name,
http://www.contextures.com/xlNames01.html#Dynamic
'or a fixed range like Range("A1:H1200")
Set rng = ws1.Range("A4").CurrentRegion '<<< Change

With Application
CalcMode = .Calculation
.Calculation = xlCalculationManual
.ScreenUpdating = False
End With

With ws1
rng.Columns(29).AdvancedFilter _
Action:=xlFilterCopy, _
CopyToRange:=.Range("IV1"), Unique:=True
'This example filter on the first column in the range (change
this if needed)
'You see that the last two columns of the worksheet are used to
make a Unique list
'and add the CriteriaRange.(you can't use this macro if you use
the columns)

Lrow = .Cells(Rows.Count, "IV").End(xlUp).Row
.Range("IU1").Value = .Range("IV1").Value

For Each cell In .Range("IV2:IV" & Lrow)
.Range("IU2").Value = cell.Value
Set WSNew = Sheets.Add
On Error Resume Next
WSNew.Name = cell.Value
If err.number 0 Then
MsgBox "Change the name of : " & WSNew.Name & "
manually"
err.Clear
End If
On Error GoTo 0
rng.AdvancedFilter Action:=xlFilterCopy, _
CriteriaRange:=.Range("IU1:IU2"), _
CopyToRange:=WSNew.Range("A1"), _
Unique:=False
WSNew.Columns.Autofit
Next
.Columns("IU:IV").Clear
End With

With Application
.ScreenUpdating = True
.Calculation = CalcMode
End With
End Sub

I have unique headers
no empty rows
no merged cells
the current region is the whole used area, except for the first three
rows. TIA

Greg