need content 2 play multiplayer....

I get an exclamation point next to multiplayer games (some of them) and cannot enter them.

I have the full version,
I downloaded all I can from xbox marketplace.
I can host games with all the maps,
and if I get a friend requesting me to join them, I can get into any map as multiplayer.
I already tried re-downloading all the content....

The only prob is getting into hosted games from the get- go.