Hi Andreas, thanks for providing the RC2 of Dune 2.6. I successfully tested it with GCC 7.3 and CMake 3.11~rc1. I compiled and ran the tests and DuMux on top. The only cosmetic issues are related to pedantic warnings and are already addressed by Tobias' !458. I am not sure whether these changes should be included in 2.6 or not. Bye Christoph