Each new document opens in compatibility mode!

Both Office 2007 and 2010 are installed on my Windows 7 computer.

I tried:
1.
File --> Info --> Check for issues --> Check compatibility --> Select versions to show.
Only Word 2007 is visible in the list! No sign of Word 2010!

2.
Right click on the normal.dotm file --> Open this type of file always with Word 2010.

Nothing helps

Anybody any suggestions?
You would make me very happy!