Have you tried hosting your own LAN server on it? It can't work from the scenario screen alone

i have tried singleplayer when it loads it says there is no respawn and i cant get pass a blackscreen

Marcus, you have to play the game in multiplayer. Click on servers then click on host your own game then if you want to play solo just click LAN game and start. Most of the fun scripts wont fire off in SP mode. To play SP you have to host your own LAN game.

I keep getting an error "steamMPMission/_cur_mp.Tanoa/mission.sqm/Mission/Entities/item917.type: Vechicle class Her_moduleSurvive no longer exists" Am i missing a mod or something?

You only need 3 mods to play. Sounds like your missing Hero Survive mod

I receive tyhe same error, but all 3 mods have been added

yeah i eventually got it to work its ok

I can't get the mission file error to work.

How to build a base?

You have to sling the FOB crate at your starting base/spawn using the chopper. Go to the screen shots to see how to sling the FOB. If you need more help catch me in my discord. https://discord.gg/M6sDwqz