On 6 Nov 2017, at 17:06, Roland Haas <rhaas@illinois.edu> wrote:

* 6 failing tests
** prolongation one is new, need input from Erik, want trac ticket

It turns out that this was already discussed in the original ticket for the feature, https://trac.einsteintoolkit.org/ticket/2068, and was fixed in a pull request https://bitbucket.org/eschnett/carpet/pull-requests/19/correct-error-in-vertex-centred/diff, which was reviewed as OK by Roland in https://trac.einsteintoolkit.org/ticket/2074, but never applied.  I just applied it.  Hopefully it will fix the problems.