Unity "No MonoBehaviour script" Run impossible

[eses]

@MalekRBAM

And use codetags when posting.

Please edit your post, here is the info how you can do this:

Using code tags properly

If you see someone who needs to know about code tags, please link them to this post: Please use code tags when posting code. You can "tag" your code by typing [984347--130826--Screenshot 2015-03-16 10.33.58.png] around your code. There is no overt "Code" tag button that automatically tags a selection as code. That being said, however, we can Insert code directly into the post using the "Insert Code" button: [image] This will bring up an "Insert" window were we can paste our code and c…

When code is formatted It is quite obvious to see where the problem is:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class CharacBehaviour : MonoBehaviour
{
    public Rigidbody2D rb;
    public float vitesse;

    void Start()
    {
        rb.velocity += new Vecteur2(vitesse,0);
    }

    void Update()
    {
    }
}

There is no such thing as using some non-english language words for C# language keywords:

rb.velocity += new Vecteur2(vitesse,0);

You have to use correct C# keywords.