Re: [Ifeffit] feff6L and path finder limit

the recent messages on error messages written by the feff6L module of artemis prompted me to pose the following question here. Since the very first trials with the program, last year, every time I run feff using a feff.inp file derived from a structural model that includes the metal ion and the few amino acids that would act as ligands to it, I get error messages of the type I am including here. Is there something wrong or is everything Ok and I should disregard the messages?

     phase shifts for unique potential    0
   Hard tests failed in fovrg.
Muffin-tin radius may be too large; coordination number too small.
     phase shifts for unique potential    1
   Hard tests failed in fovrg.
Muffin-tin radius may be too large; coordination number too small.
     phase shifts for unique potential    2
   Hard tests failed in fovrg.
Muffin-tin radius may be too large; coordination number too small.
     phase shifts for unique potential    3
   Hard tests failed in fovrg.
Muffin-tin radius may be too large; coordination number too small.
     phase shifts for unique potential    4
   Hard tests failed in fovrg.
Muffin-tin radius may be too large; coordination number too small.
     phase shifts for unique potential    5
   Hard tests failed in fovrg.
Muffin-tin radius may be too large; coordination number too small.
     phase shifts for unique potential    6
   Hard tests failed in fovrg.
Muffin-tin radius may be too large; coordination number too small.
     phase shifts for unique potential    7
   Hard tests failed in fovrg.
Muffin-tin radius may be too large; coordination number too small.
Preparing plane wave scattering amplitudes...
   nncrit in prcrit       9
Searching for paths...
    WARNING in PATHS Module:
       rmax > distance to most distant atom.
       Some paths may be missing.
   rmax, ratx      6.00000     5.87504
     Rmax 6.0000 keep and heap limits   0.0000000   0.0000000
    Preparing neighbor table
     nfound nheap nheapx nsc    r
     Paths found      701   (nheapx, nbx     180   8)
Eliminating path degeneracies...
     Plane wave chi amplitude filter   2.50%
     Unique paths    153, total paths     264

____________________________________________

Stefano Ciurli
Professor of Chemistry
Laboratory of Bioinorganic Chemistry
Department of Agro-Environmental Science and Technology
University of Bologna
Viale Giuseppe Fanin, 40
I-40127 Bologna
Italy
Phone: +39-051-209-6204
Fax: +39-051-209-6203

"Fatti non foste a viver come bruti,
ma per seguir virtute e canoscenza"
Dante Alighieri - Inferno - Canto XXVI

"Ihr seid bestimmt, nicht Tieren gleich zu leben,
Nein, Tugend zu erringen und Erkenntnis"
"Ye were not form'd to live the life of brutes,
But virtue to pursue and knowledge high"