CFD Online Discussion Forums - Floating point exception (core dumped)

Hello, I am having error due to division by zero. I checked all my BCs. Everything looks fine. Any idea about what the problem is?
Code:
PIMPLE: iteration 1

--> FOAM Warning : 

    From function void Foam::lduMatrix::operator-=(const Foam::lduMatrix&)

    in file matrices/lduMatrix/lduMatrix/lduMatrixOperations.C at line 286

    Unknown matrix type combination

    this : diagonal:0 symmetric:0 asymmetric:1

    A    : diagonal:0 symmetric:0 asymmetric:0

   Normalisation factor = 87582.7

smoothSolver:  Iteration 0 residual = 1

smoothSolver:  Iteration 4 residual = 8.65356e-09

smoothSolver:  Solving for Ux, Initial residual = 1, Final residual = 8.65356e-09, No Iterations 4

   Normalisation factor = 0.0721236

smoothSolver:  Iteration 0 residual = 0.743557

smoothSolver:  Iteration 4 residual = 5.10218e-05

smoothSolver:  Solving for Uy, Initial residual = 0.743557, Final residual = 5.10218e-05, No Iterations 4

   Normalisation factor = 0.0705167

smoothSolver:  Iteration 0 residual = 0.802723

smoothSolver:  Iteration 4 residual = 4.89182e-05

smoothSolver:  Solving for Uz, Initial residual = 0.802723, Final residual = 4.89182e-05, No Iterations 4



#0  Foam::error::printStack(Foam::Ostream&) at ??:?

#1  Foam::sigFpe::sigHandler(int) at ??:?

#2  ? in "/lib/x86_64-linux-gnu/libc.so.6"

#3  Foam::divide(Foam::Field<double>&, double const&, Foam::UList<double> const&) at ??:?

#4  Foam::tmp<Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh> > Foam::operator/<Foam::fvPatchField, Foam::volMesh>(Foam::dimensioned<double> const&, Foam::tmp<Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh> > const&) in "/opt/openfoam4/platforms/linux64GccDPInt32Opt/bin/pimpleFoam"

#5  ? in "/opt/openfoam4/platforms/linux64GccDPInt32Opt/bin/pimpleFoam"

#6  __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"

#7  ? in "/opt/openfoam4/platforms/linux64GccDPInt32Opt/bin/pimpleFoam"

Floating point exception (core dumped)