Index: trunk/src/gfx/keyframed_mesh.cc
===================================================================
--- trunk/src/gfx/keyframed_mesh.cc	(revision 241)
+++ trunk/src/gfx/keyframed_mesh.cc	(revision 251)
@@ -106,5 +106,5 @@
 }
 
-void nv::keyframed_mesh::update( program* a_program )
+void nv::keyframed_mesh::update( program* a_program ) const
 {
 	a_program->set_opt_uniform( "nv_interpolate", m_interpolation );