So I exported some assets I made in Blender into a glb file and placed it into Godot 4 but, numerous issues have risen. When I saved the export as a tscn, I was not able to delete any content in it because “Can't operate on nodes the current scene in inherits from!”
After exporting it as a Mesh Library, I noticed that some of the pieces were not being placed in the gridmap when I tried to place them in( or at least I can’t see them for some reason). I don’t know what the issue is. I’m confused. On top of that, the short keys for the gridmap feature doesn’t work. I really worked hard on those 3d models and the texture atlas for them. Is there anyway I can solve the issues that I’m facing? Should I got back to a previous version of Godot?

The biggest issue I'm having has to do with the pieces that have texture on them but, I'm not even sure if that's the problem.

Oof I don't have the slightest clue what the problem might be, but here's chat gtp's response cause hey- who knows right?

It sounds like you're experiencing multiple issues with your Godot project. Here are some suggestions to help you troubleshoot:

"Can't operate on nodes the current scene inherits from" error:

This error message means that you are trying to delete a node that is part of the scene that the current scene inherits from. To fix this issue, you need to open the scene that the current scene inherits from and delete the node from there. Alternatively, you can copy the node you want to keep from the inherited scene, paste it into the current scene, and then delete the original node.

Mesh Library not showing up in the gridmap: There could be several reasons why the pieces aren't showing up in the gridmap. First, make sure that the pieces are correctly positioned in the Mesh Library scene. You can check this by opening the Mesh Library scene and verifying that the pieces are in the correct position. Second, make sure that the Mesh Library is properly loaded in the main scene. You can do this by checking the Node tab in the Inspector panel to see if the Mesh Library is listed. Finally, check the GridMap node's settings to make sure it's set up correctly. You can do this by checking the Inspector panel and verifying that the correct Mesh Library is selected and that the grid cell size is appropriate for the size of your pieces.

Shortcut keys for GridMap not working:

If the shortcut keys for GridMap aren't working, you can try resetting Godot's preferences to see if that fixes the issue. To do this, go to Editor > Editor Settings, then click on the "Reset to Defaults" button at the bottom of the window.

Texture issues:

If you're having trouble with textures not showing up correctly, make sure that the texture atlas is correctly set up in Godot. You can do this by checking the TexturePackerImport node in the Inspector panel and verifying that the correct texture atlas file is selected. Additionally, make sure that the UV mapping of your 3D models is correct. You can do this by opening the 3D model in Blender and verifying that the texture is correctly applied to the model.

    Erich_L
    "Alternatively, you can copy the node you want to keep from the inherited scene, paste it into the current scene, and then delete the original node."

    Thanks. This seems to work for me. I'll be back to tell you about my success or failures tackling the other problems.

      Erich_L Sorry for the confusion about the Gridmap. I'll try to make the problem more clear. When I select a piece from the mesh library, I do see it in the editor following my mouse arrow around the grid when I move it across the grid map; always staying on the cell that the mouse arrow is hovering on. So there seems to be nothing wrong with the origin point of the mesh pieces.

      However, when I press the left mouse button to place that piece into the gridmap's cell; it doesn't get placed or at least with the pieces that do have textures applied to them. When it comes to pieces that have no textures applied to them; they'll get added to the gridmap. I hope this clears things up.

      Edit: Here is a screenshot for more context:

      Notice how the piece that is selected is visible on the gridmap cell? That's just a preview for a lack of a better term. Actual attempts at placing the piece on the gridmap doesn't work. It's not visible or there in any other context.

      Edit again:
      "If the shortcut keys for GridMap aren't working, you can try resetting Godot's preferences to see if that fixes the issue. To do this, go to Editor > Editor Settings, then click on the 'Reset to Defaults' button at the bottom of the window."

      I'm just recently installed Godot 4, so I know I didn't mess with the settings. I did still try to find the 'Reset To Defaults' Button in the Editor Settings but, I didn't see it. Here is another screenshot:

        a month later

        I had this exact problem as well. It seems to have solved itself by setting the renderer to "forward+". Originally I was using "compatibility".