Unity 3 lightmapping crash

Hi! Today i downloaded unity 3 free and i wanted to check out light mapping . I made simple scene form 2 cubes and point light. But when i click Bake or Bake selected it shows me “Don’t send” error and in console appears "Beast error: 11: Job Execution Failure" - error in file E:/BuildAgent/ work /68355d6e5d19d587/edditor/mone/LightmapEditor/LightmapEditor.cs at line: 771

It happens with all types of lights and objects - meshes. Please help.

I have a similar problem, but my Unity falls down when I try to bake some lightmap, even with simple primitives. I’m very upset and don’t know what to do. I’ve already tried everything!