Runtime 13....type (mismatch error)

Sub CreateaMain()

ShtNames = Array("May 08_478156199", "May 08_4614445456", "June
08_478156199", "June 08_461445456", "July 08_478156199", "July 08_461445456")
With Sheets("Phones_Analysis_9-2008")
LastRow = .Range("F" & Rows.Count).End(xlUp).Row
For ShtNum = LBound(ShtNames) To UBound(ShtNames)
Set Sht = Sheets(ShtNames(ShtNum))
For RowCount = 1 To LastRow
PhoneNum = .Range("F" & RowCount)
Set c = Sht.Columns("A").Find(what:=PhoneNum, _
LookIn:=xlValues, lookat:=xlWhole)
Error If Not c Is Nothing Then
.Cells("B" & RowCount).Offset(0, ShtNum) = _
Sht.Range("P" & c.Row)
End If
Next RowCount
Next ShtNum
End With
End Sub


Thanks. Got this from user and waiting on reply...anyone help in the meantime?