After downloading a "free aircraft" i was eager to try it out in multiplayer, but as soon as everything is finished load i get some like "The host has disconnected" but i am able to rejoin with a default Microsoft aircraft. I'm using an aircraft downloaded from the FSX section of the downloads so there aren't any compatibility issues.
Don't know why you're being disconnected but your aircraft will show as one the host has in his list regardless of what it actually is you are flying.
probably doesn't help though
Thats me up there by the way, its the Constellation
For some reason, I have the same problem & I don't know why. Although when I try to host with this aircraft everything is good.