Excel不断崩溃-梳理文件

Question

在单元格中捕获文件名后，我正在使用以下脚本将文件夹中的文件合并。它曾经可以正常工作，但是当我今天运行此程序时，excel仍然崩溃。

代码中没有语法错误。我无法弄清楚如何使此代码运行。

代码：

Sub Button_Click2()
    Dim SummarySheet As Worksheet
    Dim FolderPath As String
    Dim NRow As Long
    Dim FileName As String
    Dim WorkBk As Workbook
    Dim SourceRange As Range
    Dim DestRange As Range

    Dim TemplatePath As String
    TemplatePath = Application.ActiveWorkbook.Path


    ' Create a new workbook and set a variable to the first sheet.
    Set SummarySheet = Workbooks.Add(xlWBATWorksheet).Worksheets(1)

    ' Modify this folder path to point to the files you want to use.
    FolderPath = TemplatePath & "\"

    ' NRow keeps track of where to insert new rows in the destination workbook.
    NRow = 1

    ' Call Dir the first time, pointing it to all Excel files in the folder path.
    FileName = Dir(FolderPath & "*.xls*")

    ' Loop until Dir returns an empty string.
    Do While FileName <> ""
        ' Open a workbook in the folder
        Set WorkBk = Workbooks.Open(FolderPath & FileName)

        ' Set the cell in column A to be the file name.
        SummarySheet.Range("A" & NRow).Value = FileName

        ' Set the source range to be A9 through C9.
        ' Modify this range for your workbooks.
        ' It can span multiple rows.
           Dim LastRow As Long
    LastRow = WorkBk.Worksheets(1).Cells.Find(What:="*", _
                 After:=WorkBk.Worksheets(1).Cells.Range("A1"), _
                 SearchDirection:=xlPrevious, _
                 LookIn:=xlFormulas, _
                 SearchOrder:=xlByRows).Row
    Set SourceRange = WorkBk.Worksheets(1).Range("A1:AA" & LastRow)

        ' Set the destination range to start at column B and
        ' be the same size as the source range.
        Set DestRange = SummarySheet.Range("B" & NRow)
        Set DestRange = DestRange.Resize(SourceRange.Rows.Count, _
           SourceRange.Columns.Count)

        ' Copy over the values from the source to the destination.
        DestRange.Value = SourceRange.Value

        ' Increase NRow so that we know where to copy data next.
        NRow = NRow + DestRange.Rows.Count

        ' Close the source workbook without saving changes.
        WorkBk.Close savechanges:=False

        ' Use Dir to get the next file name.
        FileName = Dir()
    Loop

    ' Call AutoFit on the destination sheet so that all
    ' data is readable.
    SummarySheet.Columns.AutoFit
End Sub

崩溃的屏幕截图：