A fair bit of Eric and my work over the past 6-months has involved using multivariate state-space models (MSSMs) to make inferences about population spatial structure. As part of this work, Eric worked on using data-cloning (Lele et al. 2007) for obtaining MLEs from MSSMs. Eric has posted for fitting MSSMs using data-cloning to FishBox.
This is "research" code, but should be useful to others trying to use data-cloning.