Rail_movers not working.
I want to make a ship cruising above Yavin, but the skybox trees are stationary. 'Fine', I thought, 'I'll just add in some rail movers for the nearer trees, and the stationary ones can be in the distance.' I tried to make a rail system based off of the 't1_rail' level that came with radiant. Thing is, when I try to run my compiled map, I get a 'entity 84 has null model' error, and the game returns to the main menu. I'm trying to place these rails through a skyportal (Which is how I am managing to get such a big ship), in case that's relevant, but can't seem to fix the problem of the real level appearing in the skyportal. What should I do, just move it further away from the level?