I've been trying to use this toolset for a couple years, here and there. There's always a required step/tool that just bombs and unfortunately breaks the whole processing sequence. This latest iteration for 10.3 fails right out of the gate when I try the Level DEM tool. I guess it's better to fail from the get go than 16 steps into an 18 step process. I'm guessing that this toolset works for some developer, somewhere in some extremely specific and probably highly tweaked configuration. Can't this whole environment be zipped up into an installer that is more or less contained and configured in working order?