I have this rigged mesh item. When I try to upload it into SL, I cannot check the skin weights box. I have tried redoing it a few times and the last time I did it according to this video http://saeluan.net/tutorials/maya/rigging-a-mesh-in-maya/. I am using maya 2012 to export the file because I was told that it already had the correct dae exporter. What could I be doing wrong?