problem with a "mini" view

Hello,

Can somebody please explain the problem with this code. I simply want to place a "view" up in the corner of the screen. It does this however it "freezes up" the main camera view at the same time...the cursor then appears only within this "small" view...I have no idea why.

view Small_Look // sets up a view area for overhead birds eye view
{
layer = 99;
pos_x = 600;
pos_y = 50;
size_x = 150;
size_y = 150;
}

function Mini_On()
{
Small_Look.x = center_ent.x;
Small_Look.y = center_ent.y;
Small_Look.z = 500;
Small_Look.pan = 180;
Small_Look.tilt = -90;
Small_Look.roll = 0;
Small_Look.arc = 77;
Small_Look.visible = on;
}

what is that "center_ent"?
Otherwise this code is great!
Possible you are called this function in some while bracket.
Because to me very similiar miniview works without any problems.

thanks for the reply. The "center_ent" is simply an entity that is always in the center of the screen view...