[SOLVED] Adobe Reader starts instead of Nautilus

I have just updated to Mageia 2 and the GNOME desktop. When I click on the "Home Folder" directory icon, then Acrobat Reader is started and not Nautilus with the home directory.
And Acrobat Reader gives the error message: "There was an error opening this document. It is a directory."
So how can I open the homefolder with Nautilus? How can I teach Adobe Reader that it does not assign itself to a directory?

And Acrobat Reader gives the error message: "There was an error opening this document. It is a directory."
So how can I open the homefolder with Nautilus? How can I teach Adobe Reader that it does not assign itself to a directory?