I set an Action Actuator to play an action that animates the offset of a UVWarp modifier Y offset up in a way so it loops, and then I press P, and… nothing! I set the modifier up correctly, the node textures are mapped to the UV in their input sockets, and there is nothing, stuck at frame 0.
When I made water and lava surfaces previously, it worked, but somehow, it doesnt. This is weird.