I have the similar problem. i  installed Easy_planeshift build script version: 1.1. i am getting this error when it loads the DR:

 After cur_region->Prepare: time=57490
WARNING! Object \'End-platform\' is not closed!
WARNING! Object \'SmallCellEntrace01\' is not closed!
WARNING! Object \'DemonStairs\' is not closed!
WARNING! Object \'SnakeStairs01\' is not closed!
WARNING! Object \'Army-Missiles\' is not closed!
WARNING! Object \'_g_GlowingSphere_03\' is not closed!
...
FindBestSplitLocation failed: split_loc(nan) >= min1(nan)
  This node contains the following objects:
    0: \'mouth-cave\' (-41.0114,-92.0876,3.0274)-(-39.0396,-89.3078,5.37833)
    1: \'Emit02\' (nan,nan,nan)-(-1e+09,-1e+09,-1e+09)
Something bad happened in csKDTreeChild::RemoveLeaf!
  Trying to remove leaf for: \'_s_sigil_03\' (-5.91674,-0.660167,-4.18592)-(-4.5768,1.64949,-1.87626)!

has someone an idea??
......
Build scripts version: 1.1

Distribution: testing/unstable
(Debian based)
Operating system: Linux 2.6.12-10-386 i686

Software packages:
        GNU bash, version 3.00.16(1)-release (i486-pc-linux-gnu)
        Concurrent Versions System (CVS) 1.12.9 (client/server)
        autoconf (GNU Autoconf) 2.59
        automake (GNU automake) 1.9.5
        Jam 2.5. OS=LINUX. Copyright 1993-2002 Christopher Seiwald.
        gcc (GCC) 4.0.2 20050808 (prerelease) (Ubuntu 4.0.1-4ubuntu9)
        GNU sed Version 4.1.4

Video card driver info:
        OpenGL vendor string: NVIDIA Corporation
        OpenGL renderer string: GeForce FX 5900 Ultra/AGP/SSE2
        OpenGL version string: 2.0.1 NVIDIA 81.78

Build versions:
        cal3d           2005-10-06 00:00:00
        crystalspace    2005-10-06 00:00:00
        cel             2005-10-06 00:00:00
        planeshift      2005-11-30 00:00:00