Opening xml's with calc

Hey,

I recently found an “issue” with calc. I’m generating .xml file from the accounting program and opening it with calc. When i’m opening this document in some cells i have value “N,aN” which brokes forumals to count other cells. When im opening this file with Excel in “N,aN” cells i have a normal “0” value and formulas are working. Could you give me some ideas how to resolve this?

Could you please upload an example of such Xml file and result Calc file.