ok
j'ai mis le path ver un dossier test qui ce trouve dans mon bureau .
et si je test d'ouvrir le .irr sa donne cette erreur

Could not load mesh, because file could not be opened.: mdl/buggati.irrmesh

et pour les texture je utilise les .jpg et j'ai tester avec les .png
et blender 2.48a
voici le contenu de irrb.txt

irrb log 0.4

[blender info]
             OS: [no platform]
        Version: 248
    .blend File: C:\\Documents and Settings\
ed-hacker2.REDHACKER2\\Bureau\\voiture\\bugatti\\bugatti  8\\untitled 2.blend
    .blend Root: C:\\Documents and Settings\
ed-hacker2.REDHACKER2\\Bureau\\voiture\\bugatti\\bugatti  8
 Python Version: 2.5.2 final

[options]
   Create Scene: True
 Base Directory: C:\\Documents and Settings\
ed-hacker2.REDHACKER2\\Bureau\	est\\
Scene Directory: C:\\Documents and Settings\
ed-hacker2.REDHACKER2\\Bureau\	est\\
 Mesh Directory: C:\\Documents and Settings\
ed-hacker2.REDHACKER2\\Bureau\	est\\mdl\\
Image Directory: C:\\Documents and Settings\
ed-hacker2.REDHACKER2\\Bureau\	est\	ex\\
     meshOutDir: mdl
      texOutDir: tex
         Binary: False
 Export Cameras: True
  Export Lights: True
 Export Physics: False
Image Extension: Original
  Selected Only: True
   Irrlicht Ver: 1.6
  iwalktest Env: 
   imeshcvt Env: 
  iwalktest Cmd: 

[scene info]
Scene Name:Scene
Visible Layers: [1]

[animation info]
fpsbase: 1.0000
    fps: 25
 sFrame: 1
 eFrame: 250

[ipo info]
IPO's: []
Key's: []

[action info]

[object info]
Object (0): Name=Cube, Type=Mesh, Layers=[1]
Object (1): Name=Lamp, Type=Lamp, Layers=[1]
Object (2): Name=Camera, Type=Camera, Layers=[1]

[Mesh - ob:Cube, me:Cube]
Restrict Display: False
Restrict Render: False
UV Layers (1): UVTex
Primary UV Layer: None
Double Sided: True
Mesh VertexColors: False
Mesh Key: None
Mesh ipo: None
Modifiers: None
Armatures: None
rbflags:14000
pflags: ['PROP']
isSoftBody: False

[Image]
imageName: untitled_Cube.PNG
org fullFileName: C:\\Documents and Settings\
ed-hacker2.REDHACKER2\\Bureau\\voiture\\bugatti\\bugatti  8\\untitled_Cube.PNG
fullFileName: C:\\Documents and Settings\
ed-hacker2.REDHACKER2\\Bureau\\voiture\\bugatti\\bugatti  8\\untitled_Cube.PNG
dirname: C:\\Documents and Settings\
ed-hacker2.REDHACKER2\\Bureau\\voiture\\bugatti\\bugatti  8
fileName: untitled_Cube
fileExt: .PNG
bImage.depth: 24
bImage.source: 1-still
bImage.packed: 0
bImage.lib: None
exists on disk: 1
result0: ..\\voiture\\bugatti\\bugatti  8\\untitled_Cube.PNG
result1: C:\\Documents and Settings\
ed-hacker2.REDHACKER2\\Bureau\	est\	ex\\untitled_Cube.PNG

[Buffers]
Count: 1
   uvmat:untitled_Cube.PNG:00100 : UVMaterial

[stats]
Export Complete - 1.24 seconds - 11:42:09 12/02/11
1 Object(s)
1 Mesh
1 Light(s)
0 Image(s)
8300/4124 Verts/Tris