Game crashes when going to racetrack

[Big-D]

The game crashes when i go to the race track from the office

Here is the Logfiile

18:35:18: Texture 'menuskin.horizontal.bar.dds': Loading 1 faces(PF_A8R8G8B8,128x4x1) Internal format is PF_A8R8G8B8,128x4x1.
18:35:18: Texture 'QuestionMark.dds': Loading 1 faces(PF_A8R8G8B8,32x32x1) Internal format is PF_A8R8G8B8,32x32x1.
18:35:19: Leaving OfficeState...
18:35:19: Entering RacingState...
18:35:19: [DotSceneLoader] Parsing dotScene file with version 1.0, min. Ogre version 1.7, author EasyOgreExporter
18:35:19: Mesh: Loading RacingBox.mesh.
18:35:19: Warning: RacingBox.mesh uses an old format [MeshSerializer_v1.41]; upgrade with the OgreMeshUpgrader tool
18:35:19: Texture 'Racing_Image.dds': Loading 1 faces(PF_A8R8G8B8,2048x1024x1) Internal format is PF_A8R8G8B8,2048x1024x1.