this pops up, it doesn't prevent compile..but any idea what i means?

200 entity, 0 Brush

Do you mean the Debug Window?

If that is the case then something was wrong in the compile. Not necessarily fatal, just not quite OK and the compiler returned an error message. Click on that line in the Debug Window and GtkRadiant will select that entity or brush for you, centers it in the 2D view so you can investigate it easily.