Problem loading a navmesh

Hello
I tried to post in an older thread but I got no answer :frowning:
I have a problem loading a different level containing a navmesh.
What I do is starting from an ‘empty’ level (no navmesh, just a menù) and, after having destroied all in the scene except for a dummy with a manager attached, trying to load the new level with a LoadLevelAdditive (I fond infos about LoadLevelAdditiveSync still has problems with navmeshes).
In any case with both methods I have the seme error message as Unity failed to load the navMesh.
Could anyone help me, please?

Thanks

If you get an error, you must post it. It should be a rule when asking for support.

Sorry
The error is “Failed to create agent because there is no valid NavMesh”