What is this error ?
 

hi everyone
i wanted to try some mdFoam problem with a geometry other than the tutorial one,
so i created a mesh in gambit and converted it to FoamMesh, when trying to run mdInitialise i get this :

Create time

Create mesh for time = 0



Attempt to return primitive entry ITstream : ::massDensity, line 29, IOstream: Version 2.0, format ASCII, line 0, OPENED, GOOD
primitiveEntry 'massDensity' comprises
on line 29 the label 980
as a sub-dictionary#0 Foam::error::printStack(Foam::Ostream&) in "/home/mehdi/OpenFOAM/OpenFOAM-1.6/lib/linuxGccDPOpt/libOpenFOAM.so"
#1 Foam::error::abort() in "/home/mehdi/OpenFOAM/OpenFOAM-1.6/lib/linuxGccDPOpt/libOpenFOAM.so"
#2 Foam::primitiveEntry::dict() const in "/home/mehdi/OpenFOAM/OpenFOAM-1.6/lib/linuxGccDPOpt/libOpenFOAM.so"
#3 Foam::dictionary::subDict(Foam::word const&) const in "/home/mehdi/OpenFOAM/OpenFOAM-1.6/lib/linuxGccDPOpt/libOpenFOAM.so"
#4 Foam::potential::readMdInitialiseDict(Foam::IOdict ionary const&, Foam::IOdictionary&) in "/home/mehdi/OpenFOAM/OpenFOAM-1.6/lib/linuxGccDPOpt/libpotential.so"
#5 Foam::potential::potential(Foam::polyMesh const&, Foam::IOdictionary const&, Foam::IOdictionary&) in "/home/mehdi/OpenFOAM/OpenFOAM-1.6/lib/linuxGccDPOpt/libpotential.so"
#6 main in "/home/mehdi/OpenFOAM/OpenFOAM-1.6/applications/bin/linuxGccDPOpt/mdInitialise"
#7 __libc_start_main in "/lib/tls/i686/cmov/libc.so.6"
#8 _start at /usr/src/packages/BUILD/glibc-2.9/csu/../sysdeps/i386/elf/start.S:122


From function const dictionary& primitiveEntry::dict() const
in file db/dictionary/primitiveEntry/primitiveEntry.C at line 96.

FOAM aborting

Aborted

what is this ? what can i do?