thats easy! just check soliders and factions, maybe you haven't got soliders in faction you want to play with. If you have just use the solider you want to use in faction and if solider not in faction that you want, delete the solider after using it and then change the faction of the solider on the faction what you want and then save this. But if you have 2 or bigger number of soliders you wanted to have in the second faction just do it with every solider you need to have in second faction. You can have error beacause you trying to use faction that was haven't got any soliders. and manta don't need to fix it and sit on his chair and make an updates for a steam version of Manta's warbox. and you just can play in Manta's warbox esally