Leaderboard module crash SimAnswer frontpage

I have a Q&A menu item (Navigation bar) that is linked to SimAnswer frontpage. The frontpage works fine if the Leaderboard is not assigned to the frontpage. Otherwise, if the Leaderboard module is assigned to the SimAnswer frontpage, then it becomes "
The website cannot display the page", as you can see now if you click "Q & A" on the top navigation bar.