Can't "resume games quickly" anymore (login was changed message)

Never though of it... but my wife is having the exact same problem with her own login =/

I would try deleting your profile then re-downloading it again. It could be a glitch with the profile.

I don't switch disks when I expect the "resume quickly" function to work. For example DR3, I will load the game up make sure I hit a save point then after shutting down (standby mode) when I say "Xbox on", the system comes on fast but when re-loading DR3
it boots the game from the beginning.

I haven't played that game for a while at least not since the last update so maybe I will give it a test later today.

If your copies of ac4 and dr3 are disc based, then every time you take the disc out it will make the game start from the beginning. As you got the TF bundle, it will do it as it's digital download. The other games will start instantly if you leave the disc
in the tray. At least they should.

it might be a simple case of not being signed on when you start the game. if you start the game and then sign on, it'll restart the game. but if you sign on and then start it, it'll resume where you left off.

also, isn't it still in beta?