Fixed a bug in the 'pdb.create_tensor_pdb()' user function when no diffusion tensor has been loaded.
This was reported by Chris MacRaild at https://mail.gna.org/public/relax-devel/2006-10/msg00204.html (Message-id: <1162304784.3525.133.camel@...>).
The solution was simply to add a test for the presence of the diffusion tensor.
Authored by: bugman 2006-11-02
Parent: [r2724]
Child: [r2726]