Forces in icoStructFoam
 

Hi, I'm trying to　indicate forces in OF-1.6 icoStructFoam solver.
But, I'm not able to calculate forces.

functions
{
force
{
type forceCoeffs;
functionObjectLibs ("libforces.so");
outputControl timeStep;
outputInterval 1;
patches
(
interface
);
pName p;
UName U;
log true;
rhoInf 1000;
CofR (0 0 0);
liftDir (0 1 0);
dragDir (-1 0 0);
pitchAxis (0 0 1);
magUInf 0.067;
IRef 0.06;
Aref 3e-4;
}
};




Starting time loop


request for objectRegistry region0 from objectRegistry naca-fsi failed
available objects of type objectRegistry are
2
(
region1
region2
)
#0 Foam::error::printStack(Foam::Ostream&) in "/usr/local/OpenFOAM/OpenFOAM-1.6/lib/linux64GccDPOpt/libOpenFOAM.so"
#1 Foam::error::abort() in "/usr/local/OpenFOAM/OpenFOAM-1.6/lib/linux64GccDPOpt/libOpenFOAM.so"
#2 Foam::Ostream& Foam::operator<< <Foam::error>(Foam::Ostream&, Foam::errorManip<Foam::error>) in "/home/aihara/OpenFOAM/aihara-1.6/applications/bin/linux64GccDPOpt/icoStructFoam"
#3 Foam::objectRegistry const& Foam::objectRegistry::lookupObject<Foam::objectReg istry>(Foam::word const&) const in "/usr/local/OpenFOAM/OpenFOAM-1.6/lib/linux64GccDPOpt/libOpenFOAM.so"
#4 Foam::OutputFilterFunctionObject<Foam::forceCoeffs >::start() in "/usr/local/OpenFOAM/OpenFOAM-1.6/lib/linux64GccDPOpt/libforces.so"
#5 Foam::functionObjectList::read() in "/usr/local/OpenFOAM/OpenFOAM-1.6/lib/linux64GccDPOpt/libOpenFOAM.so"
#6 Foam::Time::operator++() in "/usr/local/OpenFOAM/OpenFOAM-1.6/lib/linux64GccDPOpt/libOpenFOAM.so"
#7 main in "/home/aihara/OpenFOAM/aihara-1.6/applications/bin/linux64GccDPOpt/icoStructFoam"
#8 __libc_start_main in "/lib64/tls/libc.so.6"
#9 __gxx_personality_v0 in "/home/aihara/OpenFOAM/aihara-1.6/applications/bin/linux64GccDPOpt/icoStructFoam"

From function objectRegistry::lookupObject<Type>(const word&) const
in file db/objectRegistry/objectRegistryTemplates.C at line 140.
FOAM aborting
Aborted


can anybody help me?

Thanks!