Red house icon

[Chiba]

I'm not sure what I did there, but I was switching between houses to add cribs to them and on one house I accidentally clicked an option (didn't see which, it was a bit laggy) and now the icon of said house is showing red in map view.
What does that mean? Is it potentially dangerous? How can I revert it back to normal?

On another (related) note: sometimes when switching between houses I get a very long error message and have to try several times until it works. Not sure if this is a known bug.

[snowbawl]

Red icon means that the household is being tracked on radar.  Can't help you with the error, as I do not have that problem.