Cargo Shuttles

I have been moving stuff around and when I attempted to use three of my shuttles I received this message: "Sorry. This Cargo Shuttle is being sold.
You can't load products at the moment."

Problem is, I didnt put it up on the market and I have not attempted to sell one for many real months. Also when I went to go see if it had somehow been put up, there was no shuttle on the market from me. Whats the deal?

That happened to me once, checked a few hours later and it was fine. Another temporary hiccup I suppose.

Your shuttle is subject to a hostile bid.