"Importing Small Assets" non-stop showing when import speedtree ver.8 into Unity 2019 HD

Hello, I have a problem when I import speedtree ver.8 (around 5-6 trees) into Unity 2019 HD project. “Importing Small Assets” window shows on screen everytime I click and empty folders are created sometime. Could anyone help me?

@RodneyGreenDino
There is a Workaround for this:

→ Select the Tree in the Project-Explorer

→ Select “Materials” in the Inspector

→ Click on “Extract Materials…”

→ Confirm folder

→ Apply

Do this for every tree.

I have the exact same problem with speedtree v8. It seems the .ST files creates these 'linking" folders somehow. Duplicating the .ST just creates another “empty” linking folder. Have you found a way to fix this problem?
I’ve sent an email to SpeedTree regarding this yesterday, hopefully we’ll get a fix for this.

That works like a charm! Thank you very much!

i am having a similar issue. using unity 2019.1.5

Unpacking materials seems to work but this creates duplicate materials for objects that are sharing atlas textures.

Feels like an integration bug… or maybe there is a more appropriate import process for bringing .st’s into unity?