numer substitute with # on print

[Nomine Mutato <mutato nonews org>]

Sometimes number on my Gnumeric sheet are substitute with # on print.

For example this:
 <gmr:Cell Col="1" Row="25" ValueType="30">4</gmr:Cell>

I have set the cell as "text", display and input values as string with
no interpretation.

Do you have any ideas?

thx.