NEB problems

Hello List,
I have problems running the neb example that comes with LAMMPS. I just
downloaded 5Sept2013, compiled with openmpi and ran

mpirun -np 4 ~/Downloads/lammps-5Sep13/src/lmp_openmpi -partition 4x1
-in in.neb.hop2

but i get bad dynamics (lost atoms, see below).
Any ideas what happend here?

---tail of log.lammps.0 ---
# initial minimization to relax surface

minimize 1.0e-6 1.0e-4 1000 10000
WARNING: Resetting reneighboring criteria during minimization (../min.cpp:173)
Memory usage per processor = 2.48094 Mbytes
Step Temp E_pair E_mol TotEng Press Volume
       0 0 -3.0315662 0 -3.0315662
-1.5245774 466.76444
ERROR: Lost atoms: original 421 current 415 (../thermo.cpp:391)

Daniel - I’m not seeing this problem, either with the older 5Sept
version, or the current version. Both run to completion and have
no valgrind errors.