from Mitchell Stokes (moguri) --- from the patch With f-curves there are 3 rotation modes, rotation_euler, rotation_axis_angle, and rotation_quaternion. The IPO converter was still simply looking for "rotation" f-curves instead of specific ones. This patch fixes that and also fixes bug #19873 ( http://projects.blender.org/tracker/index.php?func=detail&aid=19873&group_id=9&atid=306 ).