Just a thought, but try putting the crate in your room next to your bed. I had to do that with Tuffy, so when ever he cried at night I could just reach over and pet him. Once he knew I was always there he stoped his crying. There was a few long nights at first of course, but it worked out.

As to potty training him, like everyone else said, take him out ever 1/2 hour or so. If he doesn't go the first time, take him right back out with in 5 mins. till he does go. Then you can wait a 1/2 to an hour, depending and then do it all over again. After awhile he will get the idea....if I pee/poop I will get to stay in longer. And lots of love when he does go.