Hi, if isinstance(e, (hc.HDiv, hc.HCurl)): I believe this line should be: if isinstance(e, (hc.HDivElement, hc.HCurlElement)): (We should fix this.) Thanks, Miklos ________________________________ From: firedrake-bounces@imperial.ac.uk [firedrake-bounces@imperial.ac.uk] on behalf of Justin Chang [jychang48@gmail.com] Sent: 20 November 2015 17:15 To: firedrake Subject: [firedrake] Errors Hi all, Just the latest update, and got these errors when trying to output a solution that is in CG1 space: Traceback (most recent call last): File "2D_OS_point_ex1.py", line 309, in <module> outFile_psiA << u0_A File "/Users/justin/Software/firedrake/src/firedrake/firedrake/io.py", line 110, in __lshift__ self._file << data File "/Users/justin/Software/firedrake/src/firedrake/firedrake/io.py", line 524, in __lshift__ self._update_PVD(data) File "/Users/justin/Software/firedrake/src/firedrake/firedrake/io.py", line 542, in _update_PVD new_vtk << function File "/Users/justin/Software/firedrake/src/firedrake/firedrake/io.py", line 188, in __lshift__ coords_p1 = is_family1(ce, 'Lagrange') or is_family1(ce, 'Q') File "/Users/justin/Software/firedrake/src/firedrake/firedrake/io.py", line 157, in is_family1 if isinstance(e, (hc.HDiv, hc.HCurl)): AttributeError: 'module' object has no attribute 'HDiv' I noticed that there have been many updates/changes regarding UFL, so could this have something to do with it? On a side note, I also got these warnings: Mesh.cell() is deprecated, please use .ufl_cell() instead. Thanks, Justin