OpenXML nested tables

I am trying to insert a Table into a TableCell, but when I try to open it in MS Word I get a message like: "a <p> is required before a </tc>".

When I open the file in compatibility mod开发者_Go百科e the table formatting looks perfect but the table lines are missing. Inserting simple text into the cell works fine, the issue only happens when I try to insert a whole table.

Inserting the Table in the document outside the other table also works fine.

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If you create a nested table structure in Word, and look at the resulting XML, you will see something like:

      <w:tc>
        <w:tcPr>
          <w:tcW w:w="4621" w:type="dxa"/>
        </w:tcPr>
        <w:tbl>..</w:tbl>
        <w:p/>
      </w:tc>

As per the message, looks like you need <w:p/> after your table, and before the closing tc tag.