Wind analysis with butterfly - cannot mesh the model

Hi all,

I am trying to simulate the wind flow in the built environment with Butterfly. After I generate the wind tunnel, I am not able to mesh the model. The error message is “1. Solution exception:WindowsError” and I have no idea for solving this problem.

The attached is the building I want to test and the gh script. Thank you in advance.

-HC (445.5 KB)