public bool LoadAnimationTag(TagFileName tfn)
        {
            m_AnimationLoaded = false;
            try
            {
                m_activeAnimationTag = new Animations();
                m_activeAnimationTag.LoadTagBuffer(tfn);
                m_activeAnimationTag.LoadTagData();
                m_ActiveModel.InitializeAnimationProcessing();
                m_activeAnimationTag.ActivateAnimation(0);
                m_PreviewMode = PreviewMode.Animation;
            }
            catch (Exception ex)
            {
                throw new PrometheusException(
                          "Error loading animation tag: " + tfn.RelativePath,
                          ex,
                          true);
            }
            m_AnimationLoaded = true;

            return(false);
        }