Error with MetConv in Office tools -> Add-ins

Hi,

I have problem with office on my computer.  I have Win 7 and both Office 2007 and 2013.

When I  try to open form with Add-ons, it shows me this message error : "An error has occurred in MetConv.txt file! Please view the MetConv.log for more information.

Do you have any idea how to solve this problem? This problem happens with all Office tools.

I have tried both repairing Office and reinstalling it. So far nothing helps.

Thanks