NavMeshAgent placed on NavMesh but refuses to work

I'm getting the "SetDestination" can only be called on an active agent that has been placed on a NavMesh. error.

I have tried various fixes suggested in this forum, including simply placing the darn thing right on the NavMesh and only then enabling the NavMeshAgent and the Behaviour Designer Tree:

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using UnityEngine.AI;
5.  
6. public class CreatureBehaviour : MonoBehaviour {
7.  
8.     public LayerMask layerMask;
9.  
10.     void Start() {
11.         NavMeshHit hit;
12.         if (NavMesh.SamplePosition(transform.position, out hit, 100f, NavMesh.AllAreas)) {
13.             transform.position = hit.position;
14.  
15.             NavMeshAgent agent = gameObject.GetComponent<NavMeshAgent>();
16.             agent.enabled = true;
17.  
18.             Behaviour bt = gameObject.GetComponent<Behaviour>();
19.             bt.enabled = true;
20.         } else {
21.             // FIXME: serious error...
22.         }
23.     }
24.  
25.  
26. }
27.  

I've also tried moving it in the scene view in all directions while game is running, just to check.

No idea anymore what is going on. Anyone found a solution that definitely works?

(and yes, the NavMesh is baked, that's the blue in the screenshot)

 

Ingles -

Hi, did you manage to fix the problem? I'm having exactly the same problem.

 

Wait for one frame until you switch on the behaviour. Unity needs the next frame to place the agent on the navmesh and activate it.