Updated builds.

build/three.js

@@ -4329,8 +4329,8 @@ THREE.Matrix4.prototype = {
 		te[11] = n13*n22*n41 - n12*n23*n41 - n13*n21*n42 + n11*n23*n42 + n12*n21*n43 - n11*n22*n43;
 		te[15] = n12*n23*n31 - n13*n22*n31 + n13*n21*n32 - n11*n23*n32 - n12*n21*n33 + n11*n22*n33;
 
-		var det = me[ 0 ] * te[ 0 ] + me[ 1 ] * te[ 4 ] + me[ 2 ] * te[ 8 ] + me[ 3 ] * te[ 12 ];
-
+		var det = n11 * te[ 0 ] + n21 * te[ 4 ] + n31 * te[ 8 ] + n41 * te[ 12 ];
+	
 		if ( det == 0 ) {
 
 			var msg = "Matrix4.getInverse(): can't invert matrix, determinant is 0";