No fluid to rear brakes..

Ok so i've replaced pretty much all my brake hardware as in brand new hard and rubber lines, master cylinder, distribution block, only thing that hasn't been replaced was the brake pad and wheel cylinders just because i've been told they were good. But my problem is that i'm not getting any fluid to the rear brakes, i've tried bleeding them and nothing will come out!! and also for some reason i keep getting a fluid puddle right on of the distribution block, but all the lines are tight. Any help will be welcomed!