Unity 5: UNET Problems

Hi everyone.

I have two problems with the new networking.

In a Scene I have simply added “Network Manager” and “Network Manager HUD” components, I setup Offline and Online Scene and the Player Prefab but when the scene changes to Online Scene appears the message:

“A connection has already been set as ready. There can only be one. UnityEngine.Networking.NetworkManager:Update()”

The NetworkManager script is the default script.
After the error everything seems work correctly.

The another problem is when a second player tries to connect as a client, in that case appears the message:

“There is already a player at that playerControllerId for this connections.
UnityEngine.Networking.NetworkIdentity:UNetStaticUpdate()”

And the match doesn’t start for client.

Someone can help me?

Thank you in advance.

Make sure you check that the player prefab has a single NetworkIdentity component and that it is not present in the scene. do you have any network script components?