So I married Muiri, installed hearthfire, adopted Lucia and Samuel, build a house (Lakeweiv manor), but now my family cant move in. There is a new option "I like us to move somewhere else" and after that is an option, I think it was "We can move in to my new house" but after choosing that option, Muiri go to the temple of Mara instead and think thats my new home. My children didnt come with her so they are still in Whiterun. Is there an option for kids to move or do they move with the other parent? And is there a way to solve this?

General discussion is not really the best place to ask help with technical problems. Hearthfire has support sections for Xbox 360 and PC versions.

That said what platform are you playing on? If it is PC and you have any mods that alter where a spouse can live, you will need to get rid of the mod in order for Muiri to be able to move to the new home. The children move with your spouse, if you are not married you can talk with the children about where to move to.

That the dialogue said move somewhere else rather than move to your Falkreath home, and that Muiri moved somewhere she should not have and the children never moved with her, makes me think you are playing on the PC.

okay, I asked here because i saw some other promblem here. That is true i play on pc. i will take away all the mods that have to do with spouses!