first of all, sorry for my bad english, I will try to be as clear as possible.
I have installed the "vuforia-unity-mobile-android-ios-4-0-103.unitypackage" and my webcam is a Logitech Webcam C170:
I am using Unity Pro 4.6.2f1. Nothing more is installed, no plugins. I am using Windows XP SP3.
When I select the ARCamera prefab after it is in the Hierarchy, I see the attached error: "An error occurred while trying to enable Vuforia play mode"
In Camera Device only is "USB Video Device" when it should show "Webcam C170", the name of my webcam. When I enter the play mode, I don´t see the webcam image.
If I close Unity and open the software of Logitech, the webcam works and I see the image, so the webcam drivers are correct installed.
I have done another test with exactly the same configuration except for the Windows system and the drivers. I have used a Windows 8 system and the drivers for it of Logitech and all works perfect, the webcam, the AR plugin, etc.
The problem is that I must work in the first system, the windows XP SP3.
How I could solve this problem?
thank you very much