Problem using Touch-Base UPDD touch-screen drivers in AIR

SCENARIO

We are trying to get multi-touch functionality with Desktop AIR (30) running on MacMini with Catalan and the touch-base UPDD touch-screen driver (v6). The screen is a iiyama multitouch TF2738. The touchscreen technology is the Weida CoolTouchR System.

PROBLEM

Setting Multitouch.inputMode = MultitouchInputMode.TOUCH_POINT result in a NULL value for Multitouch.inputMode and henceforth MultiTouch Events are not receieved by event handlers.

Has anyone tried multitouch AIR desktop application on Desktop Mac before? Is there a solution to this? 

Multitouch.inputMode = MultitouchInputMode.TOUCH_POINT
//textfield called 'output1'
output1.text = Multitouch.inputMode // returns NONE

//sprite graphic called 'buttond'
buttond.addEventListener(TouchEvent.TOUCH_BEGIN, doGameTouchT)


//never called		
function doGameTouchT(e:TouchEvent){
			
	output.text = "do Touch"
}