[Nek5000-users] Error in generalev with MHD

[nek5000-users at lists.mcs.anl.gov]

Hello Neks,
I' trying to solve the MHD equations and encounter the same error 
reported here:
http://lists.mcs.anl.gov/pipermail/nek5000-users/2011-June/001365.html.
For testing, I have set up a small grid (384 elements) with B=0 at the 
boundaries and B=0 as initial conditions, and the error appears before 
the first timestep. As mentioned in the documentation, I have used the 
same BC-types for the B Field as for the velocity, so in the .rea file 
it reads:

5909   ***** PASSIVE SCALAR 1  BOUNDARY CONDITIONS *****
5910  E    1  1   0.00000       0.00000       0.00000 0.00000       0.00000
5911  E    1  2   0.00000       0.00000       0.00000 0.00000       0.00000
5912  V    1  3   0.00000       0.00000       0.00000 0.00000       0.00000
5913  E    1  4   0.00000       0.00000       0.00000 0.00000       0.00000
5914  E    1  5   0.00000       0.00000       0.00000 0.00000       0.00000
5915  E    1  6   0.00000       0.00000       0.00000 0.00000       0.00000
5916  E    2  1   0.00000       0.00000       0.00000 0.00000       0.00000
5917  E    2  2   0.00000       0.00000       0.00000 0.00000       0.00000
5918  E    2  3   0.00000       0.00000       0.00000 0.00000       0.00000
5919  E    2  4   0.00000       0.00000       0.00000 0.00000       0.00000
5920  E    2  5   0.00000       0.00000       0.00000 0.00000       0.00000
5921  E    2  6   0.00000       0.00000       0.00000 0.00000       0.00000
5922  E    3  1   0.00000       0.00000       0.00000 0.00000       0.00000
5923  E    3  2   0.00000       0.00000       0.00000 0.00000       0.00000
5924  E    3  3   0.00000       0.00000       0.00000 0.00000       0.00000
5925  E    3  4   0.00000       0.00000       0.00000 0.00000       0.00000
5926  E    3  5   0.00000       0.00000       0.00000 0.00000       0.00000
5927  E    3  6   0.00000       0.00000       0.00000 0.00000       0.00000
5928  v    4  1   0.00000       0.00000       0.00000 0.00000       0.00000
5929  E    4  2   0.00000       0.00000       0.00000 0.00000       0.00000
5930  E    4  3   0.00000       0.00000       0.00000 0.00000       0.00000
etc.

The thread above mentioned that it was due to incorrect BCs, but 
unfortunately no more details were given.

Cheers,
Jan