Christmas Gingerbread House v3.2

This years gingerbread house.... I have to admit, this is actually Mk II.  The first one ended up basically flat after the royal icing didn't set properly!  After some quick googling, I found out that royal icing was more finicky that I had thought.  It has worked flawlessly for the last two years, however I think the weather was too humid yesterday.  This one is still standing - for now!