diff --git a/src/Mod/Assembly/App/CMakeLists.txt b/src/Mod/Assembly/App/CMakeLists.txt
index c96dbc9fa..bcbd962e4 100644
--- a/src/Mod/Assembly/App/CMakeLists.txt
+++ b/src/Mod/Assembly/App/CMakeLists.txt
@@ -24,6 +24,8 @@ include_directories(
 set(Assembly_LIBS
     ${ODE_LIBRARIES}
     ${OCC_LIBRARIES}
+    ${Boost_LIBRARIES}
+    ${Boost_LOG_LIBRARY_RELEASE}
     Part
     FreeCADApp
 )
diff --git a/src/Mod/Assembly/App/opendcm/core/geometry.hpp b/src/Mod/Assembly/App/opendcm/core/geometry.hpp
index d85852bcd..eff183ec2 100644
--- a/src/Mod/Assembly/App/opendcm/core/geometry.hpp
+++ b/src/Mod/Assembly/App/opendcm/core/geometry.hpp
@@ -49,6 +49,10 @@
 #include "logging.hpp"
 #include "transformation.hpp"
 
+#ifdef USE_LOGGING
+#include <boost/math/special_functions.hpp>
+#endif
+
 namespace mpl = boost::mpl;
 namespace fusion = boost::fusion;
 
diff --git a/src/Mod/Assembly/App/opendcm/core/logging.hpp b/src/Mod/Assembly/App/opendcm/core/logging.hpp
index fd915a36f..bef24ef9b 100644
--- a/src/Mod/Assembly/App/opendcm/core/logging.hpp
+++ b/src/Mod/Assembly/App/opendcm/core/logging.hpp
@@ -22,24 +22,23 @@
 
 #ifdef USE_LOGGING
 
+#define BOOST_LOG_DYN_LINK
+
 #include <boost/log/core.hpp>
 #include <boost/log/sinks.hpp>
+#include <boost/log/expressions/formatters.hpp>
+#include <boost/log/sources/basic_logger.hpp>
 #include <boost/log/attributes.hpp>
-#include <boost/log/attributes/attribute_def.hpp>
-#include <boost/log/utility/init/to_file.hpp>
-#include <boost/log/utility/init/common_attributes.hpp>
 #include <boost/log/sources/logger.hpp>
 #include <boost/log/sources/record_ostream.hpp>
-#include <boost/log/formatters.hpp>
-#include <boost/log/filters.hpp>
+#include <boost/log/expressions.hpp>
 
 #include <boost/shared_ptr.hpp>
 
 namespace logging = boost::log;
 namespace sinks = boost::log::sinks;
 namespace src = boost::log::sources;
-namespace fmt = boost::log::formatters;
-namespace flt = boost::log::filters;
+namespace expr = boost::log::expressions;
 namespace attrs = boost::log::attributes;
 namespace keywords = boost::log::keywords;
 
@@ -68,10 +67,10 @@ inline boost::shared_ptr< sink_t > init_log() {
     boost::shared_ptr< sink_t > sink(new sink_t(backend));
     
     sink->set_formatter(
-        fmt::stream <<"[" << fmt::attr<std::string>("Tag") <<"] "
-        << fmt::if_(flt::has_attr<std::string>("ID")) [
-            fmt::stream << "["<< fmt::attr< std::string >("ID")<<"] "]
-        << fmt::message()
+        expr::stream <<"[" << expr::attr<std::string>("Tag") <<"] "
+        << expr::if_(expr::has_attr<std::string>("ID")) [
+            expr::stream << "["<< expr::attr< std::string >("ID")<<"] "]
+        << expr::smessage
     );
 
     core->add_sink(sink);
diff --git a/src/Mod/Assembly/App/opendcm/core/transformation.hpp b/src/Mod/Assembly/App/opendcm/core/transformation.hpp
index 91b7057af..26f17ded7 100644
--- a/src/Mod/Assembly/App/opendcm/core/transformation.hpp
+++ b/src/Mod/Assembly/App/opendcm/core/transformation.hpp
@@ -267,23 +267,20 @@ public:
     };
 };
 
-}//detail
-}//DCM
-
 /*When you overload a binary operator as a member function of a class the overload is used
  * when the first operand is of the class type.For stream operators, the first operand
  * is the stream and not (usually) the custom class.
 */
-template<typename Kernel, int Dim>
-std::ostream& operator<<(std::ostream& os, const dcm::detail::Transform<Kernel, Dim>& t) {
+template<typename charT, typename traits, typename Kernel, int Dim>
+std::basic_ostream<charT,traits>& operator<<(std::basic_ostream<charT,traits>& os, const dcm::detail::Transform<Kernel, Dim>& t) {
     os << "Rotation:    " << t.rotation().coeffs().transpose() << std::endl
        << "Translation: " << t.translation().vector().transpose() <<std::endl
        << "Scale:       " << t.scaling().factor();
     return os;
 }
 
-template<typename Kernel, int Dim>
-std::ostream& operator<<(std::ostream& os, dcm::detail::DiffTransform<Kernel, Dim>& t) {
+template<typename charT, typename traits,typename Kernel, int Dim>
+std::basic_ostream<charT,traits>& operator<<(std::basic_ostream<charT,traits>& os, dcm::detail::DiffTransform<Kernel, Dim>& t) {
     os << "Rotation:    " << t.rotation().coeffs().transpose() << std::endl
        << "Translation: " << t.translation().vector().transpose() <<std::endl
        << "Scale:       " << t.scaling().factor() << std::endl
@@ -291,5 +288,10 @@ std::ostream& operator<<(std::ostream& os, dcm::detail::DiffTransform<Kernel, Di
     return os;
 }
 
+}//detail
+}//DCM
+
+
+
 
 #endif //DCM_TRANSFORMATION
diff --git a/src/Mod/Assembly/App/opendcm/module3d/distance.hpp b/src/Mod/Assembly/App/opendcm/module3d/distance.hpp
index 54c5a5c07..33855aafe 100644
--- a/src/Mod/Assembly/App/opendcm/module3d/distance.hpp
+++ b/src/Mod/Assembly/App/opendcm/module3d/distance.hpp
@@ -236,7 +236,7 @@ struct Distance::type< Kernel, tag::point3D, tag::plane3D > {
         if(sspace == negative_directional)
             return result + sc_value;
 #ifdef USE_LOGGING
-        if(!boost::math::isfinite(res))
+        if(!boost::math::isfinite(result))
             BOOST_LOG(log) << "Unnormal residual detected: " << result;
 #endif
         return result;
diff --git a/src/Mod/Assembly/App/opendcm/module3d/module.hpp b/src/Mod/Assembly/App/opendcm/module3d/module.hpp
index bdd1e7cd5..ba1642902 100644
--- a/src/Mod/Assembly/App/opendcm/module3d/module.hpp
+++ b/src/Mod/Assembly/App/opendcm/module3d/module.hpp
@@ -140,6 +140,10 @@ struct Module3D {
             typedef typename mpl::push_front<Typelist, boost::blank>::type ExtTypeList;
             typedef typename boost::make_variant_over< ExtTypeList >::type Variant;
 
+#ifdef USE_LOGGING
+            src::logger log;
+#endif
+	    
             struct cloner : boost::static_visitor<void> {
                 typedef typename boost::make_variant_over< ExtTypeList >::type Variant;
 
@@ -314,9 +318,9 @@ struct Module3D {
             using inheriter_base::m_this;
 
         public:
-	    using inheriter_base::createGeometry3D;
-	    using inheriter_base::createConstraint3D;
-	    
+            using inheriter_base::createGeometry3D;
+            using inheriter_base::createConstraint3D;
+
             template<typename T>
             Geom createGeometry3D(T geom, Identifier id);
             Geom createGeometry3D(Identifier id);
diff --git a/src/Mod/Assembly/App/opendcm/module3d/solver.hpp b/src/Mod/Assembly/App/opendcm/module3d/solver.hpp
index 9a231abb8..1fc399fc6 100644
--- a/src/Mod/Assembly/App/opendcm/module3d/solver.hpp
+++ b/src/Mod/Assembly/App/opendcm/module3d/solver.hpp
@@ -52,6 +52,10 @@ struct MES  : public Sys::Kernel::MappedEquationSystem {
     typedef typename Sys::Kernel::MappedEquationSystem Base;
 
     boost::shared_ptr<Cluster> m_cluster;
+    
+#ifdef USE_LOGGING
+    src::logger log;
+#endif
 
     MES(boost::shared_ptr<Cluster> cl, int par, int eqn);
     virtual void recalculate();
@@ -126,7 +130,9 @@ struct SystemSolver : public Job<Sys> {
 
 template<typename Sys>
 MES<Sys>::MES(boost::shared_ptr<Cluster> cl, int par, int eqn) : Base(par, eqn), m_cluster(cl) {
-
+#ifdef USE_LOGGING
+    log.add_attribute("Tag", attrs::constant< std::string >("MES3D"));
+#endif
 };
 
 template<typename Sys>
@@ -160,6 +166,9 @@ void MES<Sys>::recalculate() {
 template<typename Sys>
 void MES<Sys>::removeLocalGradientZeros() {
 
+#ifdef USE_LOGGING
+    BOOST_LOG(log) << "remove local gradient zero";
+#endif
     //let the constraints treat the local zeros
     typedef typename Cluster::template object_iterator<Constraint3D> oiter;
     typedef typename boost::graph_traits<Cluster>::edge_iterator eiter;
@@ -414,7 +423,7 @@ void SystemSolver<Sys>::solveCluster(boost::shared_ptr<Cluster> cluster, Sys& sy
             bool done = false;
             if(!has_cycle) {
 #ifdef USE_LOGGING
-                BOOST_LOG(log)<< "non-cyclic system dedected"
+                BOOST_LOG(log)<< "non-cyclic system dedected";
 #endif
                               //cool, lets do uncylic. first all rotational constraints with rotational parameters
                               mes.setAccess(rotation);
@@ -447,7 +456,7 @@ void SystemSolver<Sys>::solveCluster(boost::shared_ptr<Cluster> cluster, Sys& sy
             //not done already? try it the hard way!
             if(!done) {
 #ifdef USE_LOGGING
-                BOOST_LOG(log)<< "Full scale solver used"
+                BOOST_LOG(log)<< "Full scale solver used";
 #endif
                               Rescaler re(cluster, mes);
                 re();
diff --git a/src/Mod/Assembly/App/opendcm/moduleShape3d/module.hpp b/src/Mod/Assembly/App/opendcm/moduleShape3d/module.hpp
index dc157c81d..4517144e1 100644
--- a/src/Mod/Assembly/App/opendcm/moduleShape3d/module.hpp
+++ b/src/Mod/Assembly/App/opendcm/moduleShape3d/module.hpp
@@ -265,6 +265,10 @@ struct ModuleShape3D {
             void recalc(boost::shared_ptr<Geometry3D> g);
         protected:
 
+#ifdef USE_LOGGING
+            src::logger log;
+#endif
+
             typedef details::Geometry<typename Sys::Kernel, 3, typename Sys::geometries> Base;
             typedef Object<Sys, Derived, ShapeSig > ObjBase;
             typedef typename mpl::push_front<TypeList, boost::blank>::type ExtTypeList;
diff --git a/src/Mod/Assembly/CMakeLists.txt b/src/Mod/Assembly/CMakeLists.txt
index ff46393cc..0f3d8eecf 100644
--- a/src/Mod/Assembly/CMakeLists.txt
+++ b/src/Mod/Assembly/CMakeLists.txt
@@ -1,4 +1,11 @@
 
+option(FREECAD_ASSEMBLY_SOLVER_LOGS "Generate extensive logs of the assembly solving process" OFF)
+
+if(FREECAD_ASSEMBLY_SOLVER_LOGS)
+  find_package(Boost COMPONENTS log REQUIRED)
+  add_definitions(-DUSE_LOGGING)
+endif(FREECAD_ASSEMBLY_SOLVER_LOGS)
+
 add_subdirectory(App)
 if(BUILD_GUI)
     add_subdirectory(Gui)