Almost nothing can open the exported 3mf file

[Enchiridion]

Just installed this on Blender 4.0 and the importing works great and it does export a file, but almost none of the programs I've tried can open it, except for Cura and Blender. I've tried Windows 3D Viewer, 3D Builder, 3D Paint, 3D-Tool-Free, Solidworks, https://3dviewer.net/ and other online tools, they all just error out. I can unzip the 3mf file and see the usual files are there, but I don't know enough about the format to check it's all correct.

To recreate the issue, install the plugin on Blender 4.0, add any primitive to the scene, export it to 3mf.

I'm running Windows 11.

[deathbypain]

Same issue for me.

• Windows 11 22H2
• Blender 4.1.1
• Blender3mfFormat 1.0.2
• PrusaSlicer 2.7.4

Tried with various combinations of "selection only" and "apply modifiers" on or off. Like OP, this 3mf will successfully import back into blender using this same add-on, but attempting to open in PrusaSlicer v.2.7.4 returns "ERROR: No layers were detected. You might want to repair your file(s) or check their size or thickness and retry."

I know this add-on did work correctly for me last year but I can't remember precisely what versions of everything I was running at the time. Probably blender v3.something and 1.0 of this add-on.

I'll attach the 3mf file exported from blender as well as a 3mf file created by PrusaSlicer in case inspection of these would help troubleshoot. The former is about 7KB, almost entirely comprised of the actual 3dmodel.model inside the package, while the 3mf created by PS is closer to 30KB containing a 14KB 3dmodel.model and 16KB of metadata (thumbnail and slicer config).

two_3mfs_of_the_same_model.zip