Did something change with 2.0 that prevents tiberium from generating in existing saves if you add the mod mid play? I remember in older versions of the game you could do so but you would have to go to where the game had yet to generate chunks to get it to spawn....

Now even just getting in a car and traveling for 30+ minutes away from where I had last seen any thing I still haven't run into any tiberium, is the setting just froze now unless you restart? or is there something that can be done in the console to fix this.

Commenting here - I'm having the same issue in my game.

Started the game as 2.0 with Space Age. Added the mod a couple of hours in and I'm not seeing any Tiberium trees spawning on Nauvis (I have yet to launch a rocket). If I go to start a new game, do a preview and see where the trees should be, then visit those spaces I'm not finding anything.

Semi modded, though nothing that should be interfering with world gen.

Update to the above - Started a new map, confirmed that a Tiberium node / ore generated