diff --git a/Demos/ConcaveDemo/ConcavePhysicsDemo.cpp b/Demos/ConcaveDemo/ConcavePhysicsDemo.cpp
index 12139112b..08aec94fc 100644
--- a/Demos/ConcaveDemo/ConcavePhysicsDemo.cpp
+++ b/Demos/ConcaveDemo/ConcavePhysicsDemo.cpp
@@ -192,6 +192,7 @@ void	ConcaveDemo::initPhysics()
 
 	bool useQuantizedAabbCompression = true;
 
+//comment out the next line to read the BVH from disk (first run the demo once to create the BVH)
 #define SERIALIZE_TO_DISK 1
 #ifdef SERIALIZE_TO_DISK
 	trimeshShape  = new btBvhTriangleMeshShape(indexVertexArrays,useQuantizedAabbCompression);
@@ -225,7 +226,7 @@ void	ConcaveDemo::initPhysics()
 		fseek(file, 0, SEEK_SET);
 
 		void* buffer = btAlignedAlloc(size,16);
-		memset(buffer,0xcc,size);
+		//memset(buffer,0xcc,size);
 		int read = fread(buffer,1,size,file);
 		fclose(file);
 		bool swapEndian = true;
diff --git a/Demos/GenericJointDemo/GenericJointDemo.cpp b/Demos/GenericJointDemo/GenericJointDemo.cpp
index 356c308cc..26442e6ac 100644
--- a/Demos/GenericJointDemo/GenericJointDemo.cpp
+++ b/Demos/GenericJointDemo/GenericJointDemo.cpp
@@ -41,7 +41,7 @@ GLDebugDrawer debugDrawer;
 int main(int argc,char* argv[])
 {
 	GenericJointDemo demoApp;
-	demoApp.configDebugDrawer(&debugDrawer);
+//	demoApp.configDebugDrawer(&debugDrawer);
 
 	demoApp.initPhysics();
 	demoApp.setCameraDistance(btScalar(10.));
diff --git a/Demos/Jamfile b/Demos/Jamfile
index 7497b0aae..afa326717 100644
--- a/Demos/Jamfile
+++ b/Demos/Jamfile
@@ -47,6 +47,7 @@ SubInclude TOP Demos MovingConcaveDemo ;
 SubInclude TOP Demos ConcaveDemo ;
 SubInclude TOP Demos ConstraintDemo ;
 SubInclude TOP Demos RagdollDemo ;
+#SubInclude TOP Demos GenericJointDemo ;
 SubInclude TOP Demos ContinuousConvexCollision ;
 SubInclude TOP Demos GjkConvexCastDemo ;
 SubInclude TOP Demos Raytracer ;