If you can add mods and they work. And then keep on adding and fail, change the mods installed to diferent ones and work until you install more mods and fail, likely you have ran into a soft plugin limit. Your computer is choking on the scripts and such being used.
In theory you can add any of those mods that you added last before the game failed when your mod list is low and they will work, Just not with all the others. Any mods can be installed in any of your orders, and they work. ... until you add more. Soft plugin limit. Your computer needs more resources to process the mods you have. Not a conflit or game issue.