UE4 project crashes


I am trying out examples from UE4 documentation website. The last few things I did was to add a level and change the “Scale” values.

Now my project does not start and it crashes on trying to start it.link text

Please help me know why is it happening. It is very discouraging that it happens very often.

I’m not seeing useful information there, is that the full log from the Saved\Logs folder?