Webcam Help

[cutebug731]

Ok so I have a creative Webcam Live Webcam..I have been able to use my webcam on yahoo messenger before but just today i went on to use it and it said "Webcam could not be found" However my webcam is plugged in and the green light is on..Can someone help me with this?

[ses5909]

Did any software come with it? That has happened to me on occasion using MSN, but if I restart and plug in the webcam it will work again. When the green light is always on it means the webcam is in use, so if the green light is on but yahoo tells you it can't find it, it means some other program is using it.