@Shueyfan: there are several things to check :
- first, you can recompute object coordinates (using the according button on object window)
- second, set flags to 0 as n00binio said
- third, use the fix part to object action menu
- fourth, you can also use the convert lods to object action menu. It might only be usefull if your track has been created with some original Imola objects.
@n00binio : be sure to check normals. You can display them by engaging the show normals menu or toolbar. Once done, you will see blue lines when you will select parts of your objects. All lines must point toward the exterior of the object to reflect light correctly.
You can also see normals trouble by selecting one of the special wireframe mode with front or back faces in the option menus if you are a little used to normals.
they are several ways to fix normals them, mostly by inverting normals themself and/or face vertice order.