It's probably a LIVE or PIRS container with a modified content type.
You can change it by doing the following:
1. Go to offset 0x344
2. Change it to the desired type. Here is an enum with all of the known types:
CODE
public enum ContentTypes
{
None = 0x0,
SavedGame = 0x1,
Marketplace = 0x2,
Publisher = 0x3,
IPTVDVR = 0x1000,
IPTVPauseBuffer = 0x2000, //No longer used.
XNACommunity = 0x3000,
InstalledXbox360Title = 0x4000,
XboxTitle = 0x5000,
SocialTitle = 0x6000,
Xbox360Title = 0x7000,
SystemUpdateStoragePack = 0x8000,
AvatarAsset = 0x9000,
Profile = 0x10000,
GamerPicture = 0x20000,
ThematicSkin = 0x30000,
Cache = 0x40000,
StorageDownload = 0x50000,
XboxSavedGame = 0x60000,
XboxDownload = 0x70000,
GameDemo = 0x80000,
Video = 0x90000,
GameTitle = 0xA0000,
Installer = 0xB0000,
GameTrailer = 0xC0000,
Arcade = 0xD0000,
XNA = 0xE0000,
LicenseStore = 0xF0000,
Movie = 0x100000,
TV = 0x200000,
MusicVideo = 0x300000,
GameVideo = 0x400000, // Now called Promotional.
Promotional = 0x400000,
PodcastVideo = 0x500000,
ViralVideo = 0x600000
}