Select Xref tool was broken. Should work now.
Blender FLT I/O scripts have been updated to have more features.In addition several utility scripts/applets have been added to aid in working with FLT databases within Blender. Documentation can be found here: http://wiki.blender.org/index.php/Scripts/Manual/Import/openflight_flt http://wiki.blender.org/index.php/Scripts/Manual/Export/openflight_flt http://wiki.blender.org/index.php/Scripts/Manual/FLTools