Completely ignored arguments: [--nativeLauncherVersion, 286]

Hi there! I got a little problem, when I open my launcher to play Minecraft, I get this...

Completely ignored arguments: [--nativeLauncherVersion, 286]
[18:26:24] [Client thread/INFO]: Setting user: CarlG
[18:26:24] [Client thread/INFO]: (Session ID is token:541e5ee991d440b9a2df8db08cc45fef:f5786f4629884762aa7595c37906faac)
[18:26:29] [Client thread/INFO]: LWJGL Version: 2.9.4
[18:26:31] [Client thread/INFO]: Reloading ResourceManager: Default
[18:26:33] [Client thread/WARN]: Missing sound for event: minecraft:entity.snowman.ambient
[18:26:33] [Client thread/WARN]: Missing sound for event: minecraft:item.bottle.fill_dragonbreath
[18:26:33] [Sound Library Loader/INFO]: Starting up SoundSystem...
[18:26:34] [Thread-5/INFO]: Initializing LWJGL OpenAL
[18:26:34] [Thread-5/INFO]: (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)
[18:26:36] [Thread-5/INFO]: OpenAL initialized.
[18:26:36] [Sound Library Loader/INFO]: Sound engine started
[18:26:41] [Client thread/INFO]: Created: 1024x512 textures-atlas
[18:26:45] [Client thread/ERROR]: Realms module missing

This might have happened when I tried older Minecraft versions like 1.0, and then back to new versions. I get the folder when I play Minecraft, "16w03a-natives-1209729119396243". Could anybody help me fix my problem? I need someone to help me!