New version of unity closes and "bug splat" with a previously functional scene

Hi,

I haven't been able to isolate the error, i have a scene that serves as a tutorial, it only uses some functions that change when you click a button, it was perfectily functional in version 4.0.

But as soon as i updated to version 4.1.2 (current one), it closes the application (and game if i export it to windows) and opens a "send error to unity" but i dont really know what to write on it.

Its there some function that rises an error that i shouldn't be using?

Thanks