I have an LC6090 also but it's the USB setup, no card. I would try to remove the card and re-seat it, make sure it's all the way in the slot and the contacts in the slot are lining up with the contacts on the card.
Do a search for posts by Flyguy007. He also has an LC6090 and had some trouble getting his card working correctly, but eventually did. He posted some information about it.