diff --git a/src/lagrangian/cfdemParticle/cfdemCloud/cfdemCloud.C b/src/lagrangian/cfdemParticle/cfdemCloud/cfdemCloud.C
index 5d132ddd..2eb91237 100644
--- a/src/lagrangian/cfdemParticle/cfdemCloud/cfdemCloud.C
+++ b/src/lagrangian/cfdemParticle/cfdemCloud/cfdemCloud.C
@@ -97,6 +97,8 @@ cfdemCloud::cfdemCloud
     radii_(NULL),
     voidfractions_(NULL),
     cellIDs_(NULL),
+    particleDensities_(NULL),
+    particleTypes_(NULL),
     particleWeights_(NULL),
     particleVolumes_(NULL),
     particleV_(NULL),
@@ -743,8 +745,10 @@ bool cfdemCloud::reAllocArrays()
         dataExchangeM().allocateArray(particleWeights_,0.,voidFractionM().maxCellsPerParticle());
         dataExchangeM().allocateArray(particleVolumes_,0.,voidFractionM().maxCellsPerParticle());
         dataExchangeM().allocateArray(particleV_,0.,1);
+	Info << "\nnow allocating particle densities array.\n" << endl;
         if(getParticleDensities_) dataExchangeM().allocateArray(particleDensities_,0.,1);
-        if(getParticleTypes_) dataExchangeM().allocateArray(particleTypes_,0.,1);
+	Info << "\nnow allocating particle types array.\n" << endl;
+        if(getParticleTypes_) dataExchangeM().allocateArray(particleTypes_,0,1);
         arraysReallocated_ = true;
         return true;
     }
diff --git a/src/lagrangian/cfdemParticle/cfdemCloud/cfdemCloud.H b/src/lagrangian/cfdemParticle/cfdemCloud/cfdemCloud.H
index 1b3f78cf..e736c974 100644
--- a/src/lagrangian/cfdemParticle/cfdemCloud/cfdemCloud.H
+++ b/src/lagrangian/cfdemParticle/cfdemCloud/cfdemCloud.H
@@ -335,8 +335,10 @@ public:
        virtual inline int maxType() {return -1;}
        virtual inline bool multipleTypesDMax() {return false;}
        virtual inline bool multipleTypesDMin() {return false;}
+       inline bool getParticleDensities() const;
        virtual inline double ** particleDensity() const;
        virtual inline double particleDensity(label index) const;
+       inline bool getParticleTypes() const;
        virtual inline int ** particleTypes() const;
        virtual inline label particleType(label index) const;
 
diff --git a/src/lagrangian/cfdemParticle/cfdemCloud/cfdemCloudI.H b/src/lagrangian/cfdemParticle/cfdemCloud/cfdemCloudI.H
index 56ddfa48..0db389e0 100644
--- a/src/lagrangian/cfdemParticle/cfdemCloud/cfdemCloudI.H
+++ b/src/lagrangian/cfdemParticle/cfdemCloud/cfdemCloudI.H
@@ -216,6 +216,11 @@ inline double cfdemCloud::d32(bool recalc)
     return d32_;
 }
 
+inline bool cfdemCloud::getParticleDensities() const
+{
+    return getParticleDensities_;
+}
+
 inline double ** cfdemCloud::particleDensity() const
 {
     if(!getParticleDensities_) return NULL;
@@ -234,6 +239,11 @@ inline double cfdemCloud::particleDensity(label index) const
     }
 }
 
+inline bool cfdemCloud::getParticleTypes() const
+{
+    return getParticleTypes_;
+}
+
 inline int ** cfdemCloud::particleTypes() const
 {
     if(!getParticleTypes_) return NULL;
diff --git a/src/lagrangian/cfdemParticle/subModels/thermCondModel/ZehnerSchluenderThermCond/ZehnerSchluenderThermCond.C b/src/lagrangian/cfdemParticle/subModels/thermCondModel/ZehnerSchluenderThermCond/ZehnerSchluenderThermCond.C
index 7b8b9a95..1d1cec33 100644
--- a/src/lagrangian/cfdemParticle/subModels/thermCondModel/ZehnerSchluenderThermCond/ZehnerSchluenderThermCond.C
+++ b/src/lagrangian/cfdemParticle/subModels/thermCondModel/ZehnerSchluenderThermCond/ZehnerSchluenderThermCond.C
@@ -187,6 +187,11 @@ void ZehnerSchluenderThermCond::calcPartKsField() const
 {
     if (typeKs_.size() <= 1) return;
 
+    if (!particleCloud_.getParticleTypes())
+    {
+        FatalError << "ZehnerSchluenderThermCond needs data for more than one type, but types are not communicated." << abort(FatalError);
+    }
+
     allocateMyArrays();
     label cellI=0;
     label partType = 0;