Machine Vision

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"Labview Logitech UWA" not working

Hello,I'm trying to acquire images from two logitech webcams using Labview logitech uwa and it's not working.well, the cams both work in every other vi(non-activex based ones).I have installed the cam drivers and the driver in the vi folder called "redist".I have registerd the v portal2.dll manually and it seems to be OK.no broken vi is in the vi and I can easily run the vi but  shows no picture. it also writes in the screen "cameras connected=0" and I'm seeing that cameras are connected. I also tried to connect each camera seprately but the same problem.I have also tried several other activex based vis and the same problem.I have not enabled the ActiveX control in the VI server properties dialog box and I also don’t know how I should do this. Isn’t this the key to solve the problem? I know nothing about enabling the activex server, I just read the above sentence in a forum.thanks
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