Auto it click exception: access violation reading 0x00000083

My code should open a window from taskbar and then click a control from it. The problem is that after it opens the window I get the error : "exception: access violation reading 0x00000083".I am new to Python (and in programing) and I have no ideea what that means or how to solve it.My code looks like this :

    import autoit, time
    autoit.win_activate("KOPLAYER 1.3.1040")
    time.sleep(2)
    autoit.mouse_click(131, 507)

It opens (activates) the window but after that I get that exception error.

I don't know if that works but change the 2 to 2000. Because in the normal AutoIt version you enter the time in ms not in s. And the minimal wait time is 10ms. Maybe that's what causes the error!