Here’s how it should look for reference. Clicking the select/deselect buttons next to the assign button will show you which vertices are assigned to any given material
Assign will assign the selected faces to the selected material.
So how I did it was select all (press A) first. Assign everything to wood material. Next I’ll deselect everything. Then I’ll select only the cushion faces. Select the cushion material and then assign. Note that you’ll need two materials for this to work. If you only have one material I think that all faces are automatically assigned to it.
Alright, I see you got it working. I just don’t understand why this isn’t working for me. Whenever I press “assign” it (again) just assigns to every vertice
Oh wow. Scrap everything. I’m just a dummy with Blender. Hang on, and let me try a thing
Yup got it.
I didn’t press the little “+” in the right top corner of the materials window, instead I just pressed the “+” below the materials window.
How the **** should I know since I’m new to Blender. I’ll try and import this, and see if this solved my problem
If the ‘Selected Objects’ checkbox is checked in the Export FBX panel on the left when exporting, it will only export what you have selected in object mode. So either select your chair first so it is outlined, or make sure that selected objects is not checked when exporting. I had this happen the other day when UE4 just failed to import with no error message.
Hmm. Not sure about that one. Can you export from the file I sent you? I’m able to export it on my end.
Now I just can’t export at .fbx. It doesn’t give me readable error, it just fails
It’s the exporting from Blender that fails, not the import to UE4
Tried selecting a specific object, no change
Here’s the error
Yes I can. No problem there what so ever
EDIT: If I remove my materials, I can export just fine.
So just press the first material (the wood one?)?
Didn’t change anything. Still can’t export.
This is so strange 
I guess this issue is another thread, but thanks for the help regarding the textures. Really appreciate you spending so much time helping me solve this.
Also be sure that the first material is selected in the material panel when exporting. That will ensure that all your textures will be properly imported. It’s dumb but that’s how the fbx exporter likes it.
The export from blender can be a pain sometimes…
Yup. So it is highlighted.
I just tried it and with the cushion material selected it didn’t import the wood texture for some strange reason 
Keep in mind that the FBX exporter is an open source port of a proprietary format so it has some oddities and isn’t perfect by any means. Figuring those out is the price to pay for free software.
No problem.
If you get really stuck I might just try starting from “scratch” now that you know how to set things up. Start a new project and go to File->Append. Select your previous blender file and go to the objects folder. The “Cube” is your chair and you can bring that into the fresh project. That might help out if you somehow messed something up that is preventing export.
Have a nice day and good luck.
It just brings the materials with it, and still can’t export. Is there a way to append without the materials?