Functional Generative Design: Issue during Setup Validation

Hello everyone,

I've been working on a project in CATIA Functional Generative Design in 3DX R2021 for quite some time, but I always got an issue during the "Setup Validation".

I configured the model and defined functional regions as well as loads, constraints and load cases, but the "Setup Validation" always ends during the step "Preparing for simulation". In the "Diagnostic viewer" is shown the attached message after the "Setup Validation" aborted.

Does anyone know this problem or has an idea solving it?

Thank you in advance.