Multiplayer tracks / server

[2005yz450]

So my friend and I are trying to play multiplayer with each other and most of the tracks work but some aren't when I try to connect to the server it takes me to the track but says can't find track disconnected. Why is it that some tracks do that and how do we fix it one track in particular is mx777 by dj

[BMXRedBullBMX]

Move topic to troubleshooting...