Error Getting meshes

[anarchy23]

When i click on either meshes folder it gives me and error "This BSA Archive has and unknown version number. Do you want to open anyway?" I click yes then it takes me to another error that the "Index was outside the bounds of the array" And i cant open it 

 

 

Edit***** Just needed a newer BSA manager now that i exported the mesh that i wanted i cant open it in blender it does not even show up