Hi PSA001,
Please keep this post in mind:
https://community.dlubal.com/t/new-terminology-section-cross-section/2496
Our examples are usually created for the latest software versions. Since there was a major change introduced in version 2.12.11, we recommend that you continue using the RFEM + API versions mentioned in the post above. This should ensure that the examples work correctly and consistently.
Regarding the version mismatch error, unfortunately I can’t provide further details at the moment.
Best regards
Stefan Hoffmann