Hi Troels,
Would you be able to remove you additions of the reduce() function in
the relax trunk?  This was introduced with the merger of the
disp_spin_speed branch.  However this function is not present in
Python 3, hence the relaxation dispersion analysis no longer operates
for these Python versions.  To find the failure points, just run the
Relax_disp system tests on Python 3.  This problem is a release
blocker.
For some history, here is the reason directly from Guido van Rossum:
http://www.artima.com/weblogs/viewpost.jsp?thread=98196
This post is the main reason why I try to avoid map(), lambda,
reduce(), etc.  These functions in relax have always caused pain as
Python has evolved.
Cheers,
Edward