Hi Christian,<br><br>This error comes up for all problems. In fact, now I ran a .msh file, which had run succesfully before (say 3 months ago). Now, that file also gives problems, the same error. <br><br> DUNE ERROR: GridError [createGrid:uggridfactory.cc:<div class="im">
256]: Couldn't extract grid boundary.<br><br>Regards,<br></div><br>