I have 2 seamingly identical excel files.  Here is a portion of my code:

Dim iWorkbook As Infragistics.Excel.Workbook

....

Try
          iWorkbook = Infragistics.Excel.Workbook.Load(Me.lblDatafilePath.Text)
Catch ex As Exception
          DisplayMsgBox("There was an error opening Excel Workbook.  The error is: " & ex.Message)
          Exit Sub
End Try

.....

File, Test1.xls works fine.  File Test2.xls fails on the Workbook.Load line with an error of:  "The number of copies must be between 1 and 65535.
Parameter name: value Actual value was 0."

I have compared the files using multiple XLS file compare utilites and they compare as identical.  I'm at a loss!

 Thanks