Hi,
Installing SubD on SU Pro 2020 is causing issues. Steps to duplicate:

1. Install trial version of SU 2020.
2. Acquire trial SubD.
3. Launch SU 2020
4. Go to Extension Manager.
5. Install SubD (I import the downloadable file) into Sketchup.
6. Toolbar appears for subD. All good at this point.
7. Close SU 2020
8. Launch SU 2020 (it will).
9. Start a new project.
10. SU 2020 screen disappears. Does NOT launch.

To undo this I have to manually delete the subD extension from the hard-drive. Restart SU 2020 and then go into Extension Manager to uninstall/remove it completely.

Please fix this.