title: Error in excel file
body: <p>I have generated excel file.
  When I try open it, I get error
  "Problems came up in the following areas during load: Table".
  I open log and found</p>
  
  <pre>
  XML ERROR in Table
  REASON: Bad Value
  FILE:   C:\test.xml
  GROUP:  Cell
  TAG:    Data
  VALUE:   5
  
  XML ERROR in Table
  REASON: Bad Value
  FILE:   C:\test.xml
  GROUP:  Cell
  TAG:    Data
  VALUE:   5
  
  XML ERROR in Table
  REASON: Bad Value
  FILE:   C:\test.xml
  GROUP:  Cell
  TAG:    Data
  VALUE:   5
  
  XML ERROR in Table
  REASON: Bad Value
  FILE:   C:\test.xml
  GROUP:  Cell
  TAG:    Data
  VALUE:   5
  </pre>
  
  <p>How I can found where is error? It's big file about 80 Mb. Possible exist any tools which show info about error more accurate.</p>