No mesh at CAS

It usually goes like this:
- from the Studio tab you go to the Mesh tab, there you choose the right lod and press Export;
- you edit the blend to your liking and re-import it;
- if you were to switch to the Warehouse now, you’d see Geometry resources, they have been included, some has been overwritten.
It has not always been like this but that was a very long time ago

1). Make sure your game path leads to \the sims 4\ , not \the sims 4\game\bin;
2). Make sure the blender path leads to blender.exe in the installation folder;

3). If your s4s and blender are installed on the c drive and you have the d drive, you can move both there. This will prevent permission issues. If you don’t have it or it won’t work, follow the instructions from both posts
answers.microsoft.com/en-us/windows/forum/all/windows-10-grant-a-specific-application-permanent/7e80d9ca-6e3b-4d5c-bb52-ac9adcd4e5ec
4). If even that won’t work, tell me what version of s4s you’re using