Lo-Fi Games

I had the same problem. I was able to get my guy to build by manually moving him onto the roof as close as possible to the spotlight, and then right-clicking it. (I don't remember which building type it was though. It was one of the second level ones.) You should be able to dismantle with the "...

Loading a save can some times take a few minutes. It'd be nice if the game were paused when the loading is finished so that it isn't necessary to sit and watch the loading screen for fear of being attacked. Maybe have it as an option?