Xpressionist detected that you tried to divide by 0. This is mathematically undefined.

This will be an error when Plane.Position.Y is zero:

Plane.Position.X = Plane.Position.Z / Plane.Position.Y;

There might be a frame where Plane.Position.Y is zero. You can check for that:

if ( Plane.Position.Y == 0 )

{
Plane.Position.X = Plane.Position.Z / 0.000000001;
}

else

{
Plane.Position.X = Plane.Position.Z / Plane.Position.Y;
};