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The first time I select "My Pet Dungeon" I get a dimmed screen with a dialog box in the center. The box is labeled "Tutorial Video" and has a Close button. The button doesn't work. I have to force quit the game with Alt-F4 to proceed.

The second time I select "My Pet Dungeon" I get a working menu and can navigate normally. However if I select "Tutorial Video" from this menu I get the same behavior as described above.