Max 21 freezes when Redshift is the render-engine

[Fabrice]

Hi,
I have an issue with a very simple tyflow pile of box:

With the scanline render-engine there is no problem.
If I set render-engine to Redshift I can render as I want as long as tyflow icon isnt selected.
If I select the tyflow icon then Max will instantly freeze at the very next render, whit render window saying "Updating tyflow001..."
(please see image)
   

Anybody ever had this situation?

Max 2021 + Tyflow 1.011 + Redshift 3.0.30
Lenovo P620/bi-RTX3090/128 Go ram