Vladamirs C-123 flying with ground items - crates/ladders

After my main computer was stolen I had to reinstall fs2004 and all my planes. I found VZ's C-123 but it is flying with the crates and groound ladders. I might have resolved this problem some years ago on my old computer but I don't remember how. Can anyone tell me how to fly Vlad's C-123 without the ground items following me? Thanks!