No, I had used <b>--with-grid-dim=3</b>. It had the same problem.<br>Now I tried to <b>make GRIDTYPE=UGGRID GRIDDIM=3</b> and <b>make GRIDTYPE=YASPGRID GRIDDIM=3</b> both, but I still get the same error <b>DUNE ERROR: DGFException: Cannot
read an interval of dimension 3into a YaspGrid< 2 ></b><br><br>I look forward to a solution.<br><br>Thanks.<br>