Error of duplicate file in the moment of save the workbook

Hi experts.

I'm having some troubles saving  some workbooks in Analysis. I make some changes in my workbook, but in the moment when i save the file, the program create a new file and doesn't rewrite the original. What can i do to solve that?

SAP BI 4.0

Microsoft Office 2010 32 bits.

Analysis Office 1.4

Thanks for the help.