Version 1.3.1 is coded for openfoam 24.06 and older. Openfoam 25.06 available with interesting improvements for blades. https://www.openfoam.com/news/main-news/openfoam-v2506 https://www.openfoam.com/news/main-news/openfoam-v2506/post-processing#fo-blade-forces and see for previous changes in 24.12 https://www.openfoam.com/news/main-news/openfoam-v2412