segmentation fault: SOS

Hi All

I have installed the "new" TclTkGrass 2.6 from the binaries in my Debian
2 Linux system. I have had no problems with TclTkGrass 2.3, buy now I
get an error when trying to start Grass in XWindows, as follows:
/usr/local/grass42/etc/GIS.sh: line 47: 568 Segmentation fault
ETC/gis_set
I can't start GRASS, so I can't start TclTkGrass 2.6!
Any suggestions?

Thanks to all
--
--------------------------------
Santiago Begueria Portugues
    sbegueria@ipe.csic.es
   181881@filoz.unizar.es
Instituto Pirenaico de Ecologia
      Zaragoza (Spain)
--------------------------------