--- a/src/gldraw.cpp Thu May 16 02:26:50 2013 +0300 +++ b/src/gldraw.cpp Thu May 16 22:59:10 2013 +0300 @@ -157,7 +157,10 @@ m_panX = m_panY = m_rotZ = 0.0f; // Set the default zoom based on the bounding box - m_zoom = g_BBox.size () * 6; + if (g_BBox.empty () == false) + m_zoom = g_BBox.size () * 6; + else + m_zoom = 30.0f; } // =============================================================================