small error in NavierStokes_TH_MultiPhase

extensions/base_problems/NavierStokes_TH_MultiPhase.cc

@@ -80,7 +80,7 @@ void NavierStokes_TH_MultiPhase::fillOperators()
     /// < (1/tau)*rho*u_i^old , psi >
     Operator *opTimeOld = new Operator(getFeSpace(i), getFeSpace(i));
     if (density1==density2)
-      opTimeOld->addTerm(new VecAtQP_ZOT(prob->getSolution()->getDOFVector(i), new AMDiS::Factor(density1)));  
+      opTimeOld->addTerm(new VecAtQP_ZOT(prob->getSolution()->getDOFVector(i), new AMDiS::Factor<double>(density1)));  
     else
       opTimeOld->addTerm(new Vec2AtQP_ZOT(densityPhase, prob->getSolution()->getDOFVector(i), NULL));
     prob->addVectorOperator(*opTimeOld, i, getInvTau(), getInvTau());