Unable to export .fbx (or .obj) as u3d - unknown error

[WillyBirb]

Hello devs I hope this finds you well!

I am attempting to export a blender project as a .u3d file format for 3dPDF using Meshlab. The project has a 3d-orthomosaic mesh of the area surrounding a 3d modeled infrastructure piece.

I have attempted the export using .fbx, .obj, .ply, and .glb formats with the most recent nightly release as of 9/18/24 to no avail. As I was writing this out - I managed to export a .ply version that has no textures, so perhaps the hangup is due to texture related issues?

I am running on Windows 11 x64 OS.