So, by now, people know most xbox players have had trouble with hearthfire, for me it's getting Lakeview Manor to get the achievement. Now people have said to complete radiant quests, and I've done most of them except Captain Aldis'. Is there any way to know what other quests are radiant?
OK, I had to hunt around to figure out what you are talking about.
Aldis' quest--to get a copy of The Mirror for him--is a "Rare Gifts" quest although it will not be called that in your quest journal (it's under misc quests, so yeah, a radiant one). Some users have reported that they cannot get the letter from Jarl Siddgeir in Falkreath when it is still open.
Try finishing that and seeing if that triggers the letter. And make sure you don't have any other "Rare gifts" quests open. None of them will be marked as a "Rare Gifts" quest but a list of them are here:
Rare Gifts - The Elder Scrolls Wiki
If you have any quests in your misc list that "Kill bandit leader at so-and-so place" do that too.
if you close all of these misc quests, and don't get the letter, travel to Falkreath and then leave again. You shoudl get the letter after that.