Windows 7: cam capture software

I am using a logitech 9000 and tincam software to capture a picture of the sky and send it to my weather page via FTP every 15 minutes.

This all works great for 12 to 15 hour at a time.

It seems like once a day at varied times, the program looses communication with the camera--I guess that is what is happening: the result is the picture stays the same; but the date time stamp info does update.

I have checked powersettings and the like under control panel to say never under USB and everything else I thought would matter.

Any ideas- ??--when this happens the cam does seem to be on as evidenced by the red ring lighting up. It just seems the capture doesn't occur after a certain point in time each day !!

Could this be a connection thing? Did you make sure the connection via webcam and computer were ok?