My Magic Trackpad 1, keeps disconnecting after I updated to El Capitan. I replaced the batteries a few times to make sure it wasn't that. It connects for a second, the disconnects. Then says it's connected but the green light still flashes and the cursor does not move. Don't really feel like spending $120 on the new model, and theres no reason that I should have to. Theres no reason it should be disconnecting like this, I really don't understand this. I've tried everything Apple suggests, I downloaded dev tools and reset the trackpad and bluetooth completely several times.