Thick brushes not working

Corel Painter 2021 - Thick paint brushes are not working. I also purchased Modo digital painting brushes via Dmitry Marin. The Modo thick paint brushes also not working. I can do a shift reboot of Painter to factory settings. Just trying to see first if folks have an idea.

The Modo impasto  and other brushes are working.

Thank you, robb