so i was seeing if second life would accept my low poly mesh hair I've been working on last night with the local mesh option. but some reason my mesh object is floating in a large invisible box. I'm not sure how I'd fix this in blender. i included screen shots of the mesh object and the mesh error logs.
And what about the X Y Z scale values?
In the error message, LOD3 is referring to the High LoD model and Negative scale detected usually means that one or more of the X Y Z scale values in Blender > Object mode > Transforms side panel are set to a negative value. All three should be set to 1.000 before exporting (and before using any modifiers or UV unwrapping in Blender).
In the example below the Cube's X scale has been deliberately set to -1.000 (negative 1.00) :