[HELP] I can't see the model in the ydr file of a mlo map I created

As the title says, when I try to view the ydr file I used for modeling in RPFexplorer, it doesn’t show up.
I can view the collision file, but for some reason I can’t view the model file.
I’ve attached a reference video and a video of the actual process.
(It may be a bit long because I was working along with the reference video. The problem of not being able to see the model occurs towards the end of the video.)

I’m not good at English, so I’m using Google Translate. Sorry.

Reference Video: https://youtu.be/VLFrN5dFiuM?si=CZx4U8kMg2zvqzq6
I don’t understand most of what the reference video says. I’m just doing the same thing.

Actual video: https://youtu.be/1yZpPskyLm4
No sound

Blender: 4.2.3 Solluzm: 2.5.0 Codewalker:30_dev47

you were getting the error msg saying you have no sollumz material on your ydr and you ignored it? this means you have no textures so you wont see it in cw or game.
Convert to drawable with no collisions, add shaders then textures, then export.
I couldnt see your ybn ytyp properly, check your Floor Id and RoomId are the same, make sure your Entity is in the Limbo, not the room.
Double check your portals point outwards room to limbo

I’ve already made the texture a dds file and added the DEFAULT shader before setting the texture.
I also tried matching the floorID to the roomID, but that didn’t solve the problem.
The exported file looks like this, but could you take a look if you don’t mind?

Also, I would appreciate it if you could share any other useful videos other than the ones I used as references.

Export.zip (3.1 MB)

I am having a similar problem. Not sure why its not showing in codewalker… its my first attempt at an mlo, and just followed other peoples tutorials.
The edited version of my outer building ydr file shows up visible aswell as my collision.
Its just the interior that wont show up.
My materials are embedded, the face normals are fine… portals and rooms seem fine.
Any ideas?

follow the first 15 minutes of this video, you cant go wrong