"Scriptable" camera mode issues.

Hi guys!

Right, so I usually use the default "watch" camera mode with camera manipulation, but I think it's time to make my camera more professional and turn it scriptable since players can move the camera about if it's not scriptable, and I don't want that.

This is the current script I use when it is NOT scriptable:

    while rot.Value do
        wait()
        cam.CameraSubject = targ
        cam.CoordinateFrame = CFrame.new(targ.Position) * CFrame.Angles(0, angle, 0) * CFrame.new(0, 10, -30)
        angle = angle + math.rad(1)
    end

This works absolutely fine when it isn't scriptable, but when I turn it scriptable all hell breaks loose. I don't really understand what's happening, and I can't find any in depth guide anywhere. Please can someone either give me a tutorial or make the script work the same way except for scriptable camera types? Thanks a lot!

Tom