M009: Out of Date Reference for [sss]. (need rebind/repair)
Avastar supports the Appearance slider system of Secondlife. For this purpose Avastar maintains extra data which needs to be updated when a mesh is edited in some way. But those updates can take time and can not be done silently in the background. The user must actively update the reference data instead. Avastar checks before exporting if that happened and rejects the export if necessary.