Dear all, In November 2015 I did problem = NonlinearVariationalProblem(F,u,nest=False,bcs=[bc0, bc1, bc2, bc3, bc4, bc5]) This is not the correct syntax anymore. How do I say nest=False today? Thank you! Henrik -- Dipl.-Math. Henrik Büsing Institute for Applied Geophysics and Geothermal Energy E.ON Energy Research Center RWTH Aachen University ------------------------------------------------------ Mathieustr. 10 | Tel +49 (0)241 80 49907 52074 Aachen, Germany | Fax +49 (0)241 80 49889 ------------------------------------------------------ http://www.eonerc.rwth-aachen.de/GGE hbuesing@eonerc.rwth-aachen.de ------------------------------------------------------