Range("A1").select doesn't work!

This has got me stumped... the most basic of VB commands isn't working?! What am I doing wrong???

Private Sub Worksheet_Change(ByVal Target As Range)
If Not Intersect(Target, Range("R2:R130")) Is Nothing Then
Range(Target.Address).Select
ActiveCell.EntireRow.Copy
Sheets("Yearly Snapshots").Activate
Range("A1").Select
If IsEmpty(Range("A2")) = True Then
Range("A2").Select
Else
Selection.End(xlDown).Offset(1, 0).Select
End If
ActiveSheet.Paste
MsgBox "Now please Enter a new Annual Review Date"
Sheets("Master Sheet").Activate
Application.Run "dataform2.xla!ShowDataForm"
End If
End Sub

Thanks Guys,

Gareth