i have the same issue. i have the map packs. i have deleted and redownloaded them. i also cleared the xbox's cache but i still cant play the DLC. also i dont have bungie pro and i just have the standard edition halo reach.
So ya i have all three map packs but non of them are showing up in custom games or matchmaking. I know they worked i played on them before, till my gold ran out then about three months later i got a year gold card put it in went to play halo reach and its
just not showing up. before that i used to watch my vids of matches i had and when i tried to watch them and it just says I'm missing recommended downloadable content. Ive re-downloaded them countless times deleted and downloaded them agin but they just will
not show up is there anyone who can help me out, I'm pretty sure that i license transferred them on my new xbox but ill have to wait a month to see if thats the problem but it should not be i played the maps before on this Xbox so ya any help would be much