diff --git a/.travis.yml b/.travis.yml
index 53630979ef..7b33f08822 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -95,7 +95,7 @@ before_install:
 install:
   - mkdir ~/opensim-core-build && cd ~/opensim-core-build
   # Configure OpenSim.
-  - cmake $TRAVIS_BUILD_DIR -DBUILD_JAVA_WRAPPING=$BUILD_WRAPPING -DBUILD_PYTHON_WRAPPING=$BUILD_WRAPPING -DSWIG_EXECUTABLE=$HOME/swig/bin/swig -DSIMBODY_HOME=~/simbody-install -DCMAKE_CXX_FLAGS=-Werror -DCMAKE_INSTALL_PREFIX=$OPENSIM_HOME
+  - cmake $TRAVIS_BUILD_DIR -DBUILD_JAVA_WRAPPING=$BUILD_WRAPPING -DBUILD_PYTHON_WRAPPING=$BUILD_WRAPPING -DSWIG_EXECUTABLE=$HOME/swig/bin/swig -DSIMBODY_HOME=~/simbody-install -DCMAKE_CXX_FLAGS="-Werror -Wno-error=deprecated-declarations" -DCMAKE_INSTALL_PREFIX=$OPENSIM_HOME
   # Build OpenSim.
   # Build java and python C++ wrapper separately to avoid going over the memory limit.
   - if [[ "$BUILD_WRAPPING" = "on" ]]; then make -j$NPROC osimTools osimJavaJNI PyWrap; fi
diff --git a/OpenSim/Simulation/SimbodyEngine/Coordinate.cpp b/OpenSim/Simulation/SimbodyEngine/Coordinate.cpp
index 419ca52edd..02753858ad 100644
--- a/OpenSim/Simulation/SimbodyEngine/Coordinate.cpp
+++ b/OpenSim/Simulation/SimbodyEngine/Coordinate.cpp
@@ -31,6 +31,8 @@
 #include <OpenSim/Simulation/Model/Model.h>
 #include <OpenSim/Simulation/SimbodyEngine/Joint.h>
 
+#include <memory>
+
 //=============================================================================
 // STATICS
 //=============================================================================
@@ -170,8 +172,6 @@ void Coordinate::extendFinalizeFromProperties()
             cerr << "Default value = " << dv << "  > max = " << get_range(1) << endl;
         }       
     }
-    // Define the locked value for the constraint as a function
-    _lockFunction = new ModifiableConstant(get_default_value(), 1); 
 
     _lockedWarningGiven=false;
 
@@ -182,17 +182,27 @@ void Coordinate::extendAddToSystem(SimTK::MultibodySystem& system) const
 {
     Super::extendAddToSystem(system);
 
-    //create lock constraint automatically
+    // Make this modifiable temporarily so we can record information needed
+    // to later access our pieces of the SimTK::MultibodySystem. That info is
+    // const after the system has been built.
+    Coordinate* mutableThis = const_cast<Coordinate *>(this);
+
+    // Define the locked value for the constraint as a function.
+    // The PrescribedMotion will take ownership, but we'll keep a reference
+    // pointer here to allow for later modification.
+    std::unique_ptr<ModifiableConstant> 
+        funcOwner(new ModifiableConstant(get_default_value(), 1));
+    mutableThis->_lockFunction = funcOwner.get();
+    
     // The underlying SimTK constraint
-    SimTK::Constraint::PrescribedMotion lock(system.updMatterSubsystem(), 
-                                             _lockFunction.get(), 
-                                             _bodyIndex, 
-                                             SimTK::MobilizerQIndex(_mobilizerQIndex));
+    SimTK::Constraint::PrescribedMotion 
+        lock(system.updMatterSubsystem(), 
+             funcOwner.release(),   // give up ownership 
+             _bodyIndex, 
+             SimTK::MobilizerQIndex(_mobilizerQIndex));
 
-    // Beyond the const Component get the index so we can access the SimTK::Constraint later
-    Coordinate* mutableThis = const_cast<Coordinate *>(this);
+    // Save the index so we can access the SimTK::Constraint later
     mutableThis->_lockedConstraintIndex = lock.getConstraintIndex();
-    //mutableThis->_model->addModelComponent(mutableThis);
             
     if(!getProperty_prescribed_function().empty()){
         //create prescribed motion constraint automatically
diff --git a/OpenSim/Simulation/SimbodyEngine/Coordinate.h b/OpenSim/Simulation/SimbodyEngine/Coordinate.h
index 40f2052d8a..27bf9a0564 100644
--- a/OpenSim/Simulation/SimbodyEngine/Coordinate.h
+++ b/OpenSim/Simulation/SimbodyEngine/Coordinate.h
@@ -292,9 +292,13 @@ OpenSim_DECLARE_CONCRETE_OBJECT(Coordinate, ModelComponent);
     /* MobilizedBodyIndex of the body which this coordinate serves.  */
     SimTK::MobilizedBodyIndex _bodyIndex;
 
-    /* Mobilizer Q (i.e. genearlized coordinate) index for this Coordinate. */
+    /* Mobilizer Q (i.e. generalized coordinate) index for this Coordinate. */
     SimTK::MobilizerQIndex _mobilizerQIndex;
 
+    /* Keep a reference to the SimTK function owned by the PrescribedMotion
+    Constraint, so we can change the value at which to lock the joint. */
+    SimTK::ReferencePtr<ModifiableConstant> _lockFunction;
+
     /* Motion type (translational, rotational or combination). */
     MotionType _motionType;
 
@@ -305,9 +309,6 @@ OpenSim_DECLARE_CONCRETE_OBJECT(Coordinate, ModelComponent);
     /* The OpenSim::Joint that owns this coordinate. */
     SimTK::ReferencePtr<const Joint> _joint;
 
-    /* SimTK function used to lock the joint at a fixed value */
-    mutable SimTK::ReferencePtr<ModifiableConstant> _lockFunction;
-
     mutable bool _lockedWarningGiven;
 
     // PRIVATE METHODS implementing the Component interface
diff --git a/appveyor.yml b/appveyor.yml
index 58eaa8a4fb..6157ae6261 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -13,6 +13,8 @@
 # "/EHsc" is to "unwind semantics" to get error messages when using "/WX" (C4530).
 # However, this was causing some weird behavior. Not treating warnings
 # as errors for now.
+#
+### TEMPORARILY DISABLING WRAPPING (see lines with ###)
   
 shallow_clone: true
 
@@ -31,10 +33,10 @@ nuget:
 install:
   
   ## Use Chocolatey to install SWIG.
-  - choco -y install swig
+  ###- choco -y install swig
   
   ## Install python-nose for python testing.
-  - pip install nose
+  ###- pip install nose
   
   ## Simbody.
   # Simbody's installation is pushed to our Appveyor NuGet account feed.
@@ -51,7 +53,8 @@ build_script:
   - mkdir build
   - cd build
   # Configure.
-  - cmake .. -G"Visual Studio 12 2013 Win64" -DSIMBODY_HOME=C:\simbody -DCMAKE_INSTALL_PREFIX=%OPENSIM_HOME% -DBUILD_JAVA_WRAPPING=ON -DBUILD_PYTHON_WRAPPING=ON # TODO -DBUILD_SIMM_TRANSLATOR=ON
+  ###- cmake .. -G"Visual Studio 12 2013 Win64" -DSIMBODY_HOME=C:\simbody -DCMAKE_INSTALL_PREFIX=%OPENSIM_HOME% -DBUILD_JAVA_WRAPPING=ON -DBUILD_PYTHON_WRAPPING=ON # TODO -DBUILD_SIMM_TRANSLATOR=ON
+  - cmake .. -G"Visual Studio 12 2013 Win64" -DSIMBODY_HOME=C:\simbody -DCMAKE_INSTALL_PREFIX=%OPENSIM_HOME% -DBUILD_JAVA_WRAPPING=OFF -DBUILD_PYTHON_WRAPPING=OFF
   # Build.
   - cmake --build . --target ALL_BUILD --config Release -- /maxcpucount:4 /verbosity:quiet
   
@@ -75,10 +78,10 @@ test_script:
   - copy Applications\CMC\test\gait10dof18musc_subject01.osim %OPENSIM_HOME%\Models\Gait10dof18musc\gait10dof18musc.osim
   
   # Move to the installed location of the python package.
-  - cd %OPENSIM_HOME%\sdk\python
+  ###- cd %OPENSIM_HOME%\sdk\python
   
   # Run python tests.
-  - nosetests -v
+  ###- nosetests -v
 
 after_test:
   - ## On master branch, create NuGet package for OpenSim.