I can't actually play the game.

When I press play in the westerosCraft launcher, the game opens and the mods load but then the maximum memory is reached and it doesn't finish the download, how do i fix that?
Somewhere in the launcher settings (I think it's in the java tab but I'm not entirely sure) you can assign more RAM to the mod. Off the top of my head 4 GB should be enough for it to function properly.