I had problems saving WP Menu.
So i re-installed wordpress, reactivated twentyten theme.
I added a page, then went to Menu, created a new menu and add the newly created page and saved.It worked.
Now i activated this plugin, created a new page and tried to save the page to the menu but i was not able to do so.
Even after deactivating this plugin, i am not able to save an entry to the Menu.
Any help and suggestions are appreciated