Possible fix for 3Dconnexion SpaceMouse not working in SketchUp 2027 on Mac
I installed SketchUp 2027 on an Apple Silicon Mac and found that my SpaceMouse no longer worked. (every year) Reinstalling the current 3Dconnexion driver did not fix it.
It appears that the current 3Dconnexion installer installs the SketchUp plugin for SketchUp 2026, but does not install it for SketchUp 2027.
I was able to get the SpaceMouse working in SketchUp 2027 by manually copying the existing 2026 3Dconnexion plugin into the 2027 folder.
1. Quit SketchUp.
In Finder choose Go → Go to Folder… and enter:
/Library/Application Support/SketchUp 2026/SketchUp/Plugins/
Note that this is the system /Library, not your user ~/Library.
2. Copy BOTH of these items:
3DxSketchUp(folder)
3DxSketchUp.rb(file)
3. Go to:
/Library/Application Support/SketchUp 2027/SketchUp/Plugins/
and paste both items there.
You should end up with:
Plugins/3DxSketchUp.rb
and
Plugins/3DxSketchUp/
The 3DxSketchUp folder contains the supporting .rbe, .susig, and .bundle.plugin files.
4. Restart SketchUp 2027.
My SpaceMouse then started working normally.
The important part is copying both the 3DxSketchUp folder and the separate 3DxSketchUp.rb file. The .rb file is outside the folder and appears to be the loader that causes SketchUp to load the plugin.
It worked for me on Apple Silicon, but 3Dconnexion has not yet officially documented SketchUp 2027 support.


