[Moonman62]

My first thought was twisting torque and that wing snapping in the center.

[RightGeek]

Me too. I’m not an engineer, but that looks really fragile.

[doorgunner69]

Seems like a very low drag spar between the tails could stiffen things up, but may have interfered with the payload?

Asymmetric loads look like it might be an issue, but this is a Rutan design, so probably already factored in.