It is not possible to invoke an expression of type "int".(BCE0077)

Questions & Answers
1

var customSkin :GUISkin;

function OnGUI () {

	GUI.skin=customSkin;

	if(GUI.Button(Rect(Screen.width/2,Screen.height/2,100,50),"Play Game"))	{
	Application.loadedLevel ("3D Platformer.unity");
	}
	}

function Update ()
{
}

I don’t know waht i’m missing X/

2

Line 4 should be:

Application.LoadLevel ("3D Platformer.unity");

Application.loadedLevel is an integer representing the level currently loaded. That is why you got that specific error.