Several tests fail on several machines, and the cause seems to be the constraints calculated by McLachlan. Peter is looking into this. We see test failures in the thorns Dissipation and RotatingSymmetry90/180. Indications are that most failures happen with Intel 15, but some are apparently also seen with Intel 16, while others with Intel 16 seem to work fine. Optimization -O1 instead of -O2 seems to prevent the problem, but is not a viable workaround. A simple 'print' statement in the affected (auto-generated) code also makes the problem disappear. Running using one MPI process and one openMP thread reproduces the problem. valgrind does not find anything obvious pointing to memory mess-up.