Word 2010 Macro Only Runs when Initially Created

I created a macro in Word 2010, by recording and then editing it in VB. But it only ran once. It's stored in the normal template and is visible when I view macros in any other document. But it won't run. Nothing happens when I view and then attempt to run it.

When I run it initially it works perfectly. Here's the code, in case that helps:

Sub RemoveRequirements()
'
' RemoveRequirements Macro
' Remove all requirements table titles and tables from a document.
'
    Selection.Find.ClearFormatting
    With Selection.Find
        .Text = "requirements"
        .Replacement.Text = ""
        .Forward = True
        .Wrap = wdFindContinue
        .Format = False
        .MatchCase = False
        .MatchWholeWord = False
        .MatchWildcards = False
        .MatchSoundsLike = False
        .MatchAllWordForms = False
    End With
    While Selection.Find.Found
        Selection.Find.Execute
        Selection.HomeKey Unit:=wdLine
        Selection.EndKey Unit:=wdLine, Extend:=wdExtend
        Selection.Cut
        Selection.MoveRight Unit:=wdCharacter, Count:=1
        Selection.Tables(1).Select
        Selection.Cut
    Wend
End Sub