I have scene where cloth baking doesn't work.

Hi,
i wanted to finish my old scene with lots off objects. i wanted to bake cloth against them by it doesn’t seem to work.
If i make new scene cloth baking works, but not in my scene. I suppose that maybe i have some weird settings active, but i remember that i used cloth simulation here and there in the scene.

So, i created empty .blend where cloth simulation doesn’t work:
http://s000.tinyupload.com/?file_id=00485337928589934984

Can someone test this and tell if there is some option that i’m missing?

Enable Gravity
Free the Bake
Bake the cloth sim


Thank you very much!