The problem with the file is that the object definitions for each actor do not contain one group to which all of the facets belong, whose name matches the actor's internal name without spaces in either.

The file also loads all of the meshes for me, as well. But that still won't necessarily help with rigging.

I also note that, for instance, the Left Tire actor contains the mudguard as well as the tyre, so if you want the wheel to be able to spin, the mudguard needs to be part of the Car Body.

Analysing the CR2, none of the actors can have spaces in their internal names. Whether you take Morkonan's suggestion and replace those with '_' underscores or just cut them out, you can still retain the spaces in the "name Car Body" type lines in the actor definition block.

If you're comfortable with editing the CR2 (I concur with the recommendation of Notepad++, as it automatically handles compressed poser files - I use BBEdit on macOS and have a Poser codeless language module for it, so I get syntax colouring of Poser files), you'll need to add the actor named group to every one of the group lines in the actor object declarations, so that all facets are part of the rig. That seems like a lot of editing (even with a multiple search and replace), so I'd recommend using the grouping editor and create a new group matching the actor internal name without spaces, then just add all the facets to it.

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