diff --git a/src/OpenFOAM/db/dynamicLibrary/dynamicCode/dynamicCodeContext.C b/src/OpenFOAM/db/dynamicLibrary/dynamicCode/dynamicCodeContext.C
index 48691501ee..a35de05c8c 100644
--- a/src/OpenFOAM/db/dynamicLibrary/dynamicCode/dynamicCodeContext.C
+++ b/src/OpenFOAM/db/dynamicLibrary/dynamicCode/dynamicCodeContext.C
@@ -85,6 +85,14 @@ Foam::dynamicCodeContext::dynamicCodeContext(const dictionary& dict)
         stringOps::inplaceExpand(libs_, dict);
     }
 
+    // optional
+    const entry* localPtr = dict.lookupEntryPtr("localCode", false, false);
+    if (localPtr)
+    {
+        localCode_ = stringOps::trim(localPtr->stream());
+        stringOps::inplaceExpand(localCode_, dict);
+    }
+
     // calculate SHA1 digest from include, options, localCode, code
     OSHA1stream os;
     os  << include_ << options_ << libs_ << localCode_ << code_;
@@ -103,14 +111,18 @@ Foam::dynamicCodeContext::dynamicCodeContext(const dictionary& dict)
     {
         addLineDirective(include_, includePtr->startLineNumber(), dict.name());
     }
-    if (optionsPtr)
-    {
-        addLineDirective(options_, optionsPtr->startLineNumber(), dict.name());
-    }
+
+    // Do not add line directive to options_ (Make/options) since at it is a
+    // single line at this point. Can be fixed.
+
     if (libsPtr)
     {
         addLineDirective(libs_, libsPtr->startLineNumber(), dict.name());
     }
+    if (localPtr)
+    {
+        addLineDirective(localCode_, localPtr->startLineNumber(), dict.name());
+    }
 }
 
 
diff --git a/src/thermophysicalModels/chemistryModel/chemistryModel/psiChemistryModel/psiChemistryModels.C b/src/thermophysicalModels/chemistryModel/chemistryModel/psiChemistryModel/psiChemistryModels.C
index f89258586c..5b56ba374e 100644
--- a/src/thermophysicalModels/chemistryModel/chemistryModel/psiChemistryModel/psiChemistryModels.C
+++ b/src/thermophysicalModels/chemistryModel/chemistryModel/psiChemistryModel/psiChemistryModels.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2009-2010 OpenCFD Ltd.
+    \\  /    A nd           | Copyright (C) 2009-2011 OpenCFD Ltd.
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -46,6 +46,12 @@ namespace Foam
         gasThermoPhysics
     );
     makeChemistryModel
+    (
+        ODEChemistryModel,
+        psiChemistryModel,
+        constGasThermoPhysics
+    );
+    makeChemistryModel
     (
         ODEChemistryModel,
         psiChemistryModel,
diff --git a/src/thermophysicalModels/chemistryModel/chemistryModel/rhoChemistryModel/rhoChemistryModels.C b/src/thermophysicalModels/chemistryModel/chemistryModel/rhoChemistryModel/rhoChemistryModels.C
index 5b2edfb004..2f5e3dd193 100644
--- a/src/thermophysicalModels/chemistryModel/chemistryModel/rhoChemistryModel/rhoChemistryModels.C
+++ b/src/thermophysicalModels/chemistryModel/chemistryModel/rhoChemistryModel/rhoChemistryModels.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2009-2010 OpenCFD Ltd.
+    \\  /    A nd           | Copyright (C) 2009-2011 OpenCFD Ltd.
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -46,6 +46,12 @@ namespace Foam
         gasThermoPhysics
     );
     makeChemistryModel
+    (
+        ODEChemistryModel,
+        rhoChemistryModel,
+        constGasThermoPhysics
+    );
+    makeChemistryModel
     (
         ODEChemistryModel,
         rhoChemistryModel,
diff --git a/src/thermophysicalModels/chemistryModel/chemistrySolver/chemistrySolver/makeChemistrySolvers.C b/src/thermophysicalModels/chemistryModel/chemistrySolver/chemistrySolver/makeChemistrySolvers.C
index 82b29fb37b..a4c9a2aad0 100644
--- a/src/thermophysicalModels/chemistryModel/chemistrySolver/chemistrySolver/makeChemistrySolvers.C
+++ b/src/thermophysicalModels/chemistryModel/chemistrySolver/chemistrySolver/makeChemistrySolvers.C
@@ -34,8 +34,10 @@ License
 namespace Foam
 {
     makeChemistrySolverTypes(psiChemistryModel, gasThermoPhysics);
+    makeChemistrySolverTypes(psiChemistryModel, constGasThermoPhysics);
     makeChemistrySolverTypes(psiChemistryModel, icoPoly8ThermoPhysics);
     makeChemistrySolverTypes(rhoChemistryModel, gasThermoPhysics);
+    makeChemistrySolverTypes(rhoChemistryModel, constGasThermoPhysics);
     makeChemistrySolverTypes(rhoChemistryModel, icoPoly8ThermoPhysics);
 }
 
diff --git a/src/thermophysicalModels/reactionThermo/chemistryReaders/chemkinReader/chemkinReader.C b/src/thermophysicalModels/reactionThermo/chemistryReaders/chemkinReader/chemkinReader.C
index bc2d7d0e01..94648757fd 100644
--- a/src/thermophysicalModels/reactionThermo/chemistryReaders/chemkinReader/chemkinReader.C
+++ b/src/thermophysicalModels/reactionThermo/chemistryReaders/chemkinReader/chemkinReader.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2004-2010 OpenCFD Ltd.
+    \\  /    A nd           | Copyright (C) 2004-2011 OpenCFD Ltd.
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -889,12 +889,12 @@ Foam::chemkinReader::chemkinReader(const dictionary& thermoDict)
     fileName relPath = thermoDict.name().path();
     if (relPath.size())
     {
-        if (chemkinFile.size() && chemkinFile[0] != '/')
+        if (!chemkinFile.isAbsolute())
         {
             chemkinFile = relPath/chemkinFile;
         }
 
-        if (thermoFile.size() && thermoFile[0] != '/')
+        if (!thermoFile.isAbsolute())
         {
             thermoFile = relPath/thermoFile;
         }
diff --git a/src/thermophysicalModels/reactionThermo/mixtures/singleStepReactingMixture/singleStepReactingMixture.C b/src/thermophysicalModels/reactionThermo/mixtures/singleStepReactingMixture/singleStepReactingMixture.C
index 5ac41aa0e6..839ef42ba2 100644
--- a/src/thermophysicalModels/reactionThermo/mixtures/singleStepReactingMixture/singleStepReactingMixture.C
+++ b/src/thermophysicalModels/reactionThermo/mixtures/singleStepReactingMixture/singleStepReactingMixture.C
@@ -108,6 +108,8 @@ void Foam::singleStepReactingMixture<ThermoType>::calculateMaxProducts()
         Yprod0_[specieI] =  this->speciesData()[specieI].W()/Wm*Xi[i];
     }
 
+    Info << "Maximum products mass concentrations :" << Yprod0_<< endl;
+
     // Normalize the stoichiometric coeff to mass
     forAll(specieStoichCoeffs_, i)
     {
diff --git a/src/thermophysicalModels/reactionThermo/mixtures/singleStepReactingMixture/singleStepReactingMixture.H b/src/thermophysicalModels/reactionThermo/mixtures/singleStepReactingMixture/singleStepReactingMixture.H
index 5f31f225ea..9e1270de05 100644
--- a/src/thermophysicalModels/reactionThermo/mixtures/singleStepReactingMixture/singleStepReactingMixture.H
+++ b/src/thermophysicalModels/reactionThermo/mixtures/singleStepReactingMixture/singleStepReactingMixture.H
@@ -152,6 +152,9 @@ public:
             //- Return the list to indicate if specie is produced/consumed
             inline const List<int>& specieProd() const;
 
+            //- Return the list of products mass concentrations
+            inline const scalarList& Yprod0() const;
+
 
         // I-O
 
diff --git a/src/thermophysicalModels/reactionThermo/mixtures/singleStepReactingMixture/singleStepReactingMixtureI.H b/src/thermophysicalModels/reactionThermo/mixtures/singleStepReactingMixture/singleStepReactingMixtureI.H
index f8cfe1d9f1..9fab9b30a0 100644
--- a/src/thermophysicalModels/reactionThermo/mixtures/singleStepReactingMixture/singleStepReactingMixtureI.H
+++ b/src/thermophysicalModels/reactionThermo/mixtures/singleStepReactingMixture/singleStepReactingMixtureI.H
@@ -94,4 +94,12 @@ Foam::singleStepReactingMixture<ThermoType>::specieProd() const
 }
 
 
+template<class ThermoType>
+inline const Foam::scalarList&
+Foam::singleStepReactingMixture<ThermoType>::Yprod0() const
+{
+    return Yprod0_;
+}
+
+
 // ************************************************************************* //