Knock on wood, haven't had the sd problem. The only issue I've had are getting my camera pointed the right direction so it doesn't detect the temp changes through the day. I pulled pics from my I40 this weekend, over 1000 since mid April. I think I set it out in Feb and it still had 69% on the original batteries. I haven't had time to go through all of the pics, I know a big majority are temp changes, and I did see several of the rear of a coyote, but he's not coming all the way to the feeder (I don't think).
Oh, I buy mine at Cabela's. I was told the other day when I inquired about the warranty I on a reel I was buying that it doesn't matter what the factory warranty is, "you can bring it back at any time if you are dissatisfied". I remember when Walmart was that way!