Models Keep Dissapering in the game......Help....Please

[Hells_Warriors]

1st of all this is my first post on this website so hi to all
2nd of all when ever i use one of these awesome model files in the world editor they show up and look all nice and stuff ....until i get to the game itself where they arent visible ........HELP.....oh ya PLEASE

 

[Xlightscreen]

well i had that problem before but it might not be the same situation. well first it started out when i tried making a campaign and then putting the custom model into the campaign custom units instead of the maps. for some reason it dosent work so i had to put the custom model in each map.