diff --git a/examples/Importers/ImportURDFDemo/UrdfParser.h b/examples/Importers/ImportURDFDemo/UrdfParser.h
index 0bb291e58..de96885e5 100644
--- a/examples/Importers/ImportURDFDemo/UrdfParser.h
+++ b/examples/Importers/ImportURDFDemo/UrdfParser.h
@@ -87,7 +87,16 @@ struct UrdfGeometry
 
 	UrdfGeometry()
 	:m_type(URDF_GEOM_UNKNOWN),
-	m_hasFromTo(false),
+		m_sphereRadius(1),
+		m_boxSize(1,1,1),
+		m_capsuleRadius(1),
+		m_capsuleHeight(1),
+		m_hasFromTo(0),
+		m_capsuleFrom(0,1,0),
+		m_capsuleTo(1,0,0),
+		m_planeNormal(0,0,1),
+		m_meshFileType(0),
+		m_meshScale(1,1,1),
 	m_hasLocalMaterial(false)
 	{
 	}
diff --git a/examples/OpenGLWindow/GLInstancingRenderer.cpp b/examples/OpenGLWindow/GLInstancingRenderer.cpp
index 39a8c8a5b..7d628b11d 100644
--- a/examples/OpenGLWindow/GLInstancingRenderer.cpp
+++ b/examples/OpenGLWindow/GLInstancingRenderer.cpp
@@ -893,17 +893,25 @@ int GLInstancingRenderer::registerShape(const float* vertices, int numvertices,
 	gfxObj->m_numVertices = numvertices;
 
 
-	glBindBuffer(GL_ARRAY_BUFFER, m_data->m_vbo);
+	
 	int vertexStrideInBytes = 9*sizeof(float);
 	int sz = numvertices*vertexStrideInBytes;
+	int totalUsed = vertexStrideInBytes*gfxObj->m_vertexArrayOffset+sz;
+	b3Assert(totalUsed<m_data->m_maxShapeCapacityInBytes);
+	if (totalUsed>=m_data->m_maxShapeCapacityInBytes)
+	{
+		return -1;
+	}
+
+	glBindBuffer(GL_ARRAY_BUFFER, m_data->m_vbo);
+
 #if 0
 
 	char* dest=  (char*)glMapBuffer( GL_ARRAY_BUFFER,GL_WRITE_ONLY);//GL_WRITE_ONLY
 	
 	
 #ifdef B3_DEBUG
-	int totalUsed = vertexStrideInBytes*gfxObj->m_vertexArrayOffset+sz;
-	b3Assert(totalUsed<m_data->m_maxShapeCapacityInBytes);
+	
 #endif//B3_DEBUG
 
 	memcpy(dest+vertexStrideInBytes*gfxObj->m_vertexArrayOffset,vertices,sz);