Unity 3 Build Problem, UnityEditor.Hostview:OnGUI()

Hello everyone, I’ve got a wierd problem with my Project on Build.It comes up on the console when i try to build my scene, Here is an Image of the Error that appears on my Console.

I’m using Unity 3 on a 64-bit Windows 7 with 2 GB ram .The Project Folder is 800mb.
Can someone please figure out a solution to this, I’ve found people with similiar problems, But it hasn’t helped me figure out mine so far.

Thanks.

Are you using any editor scripts? It might be useful for you to post the full text of the error messages as reported in the console window.

web player :(i dunno)
i found that the problem happens when you want to include a dll in a web player project.

stand alone:
In the player setting, change .NET 2.0 subset to NET 2.0