Unfortunately the whole thing breaks too often for me. Been building a town with brushes but pretty often I end up breaking the build script so I have to hunt down the one part/intersection that causes it (usually one side of a window edge which consists of 4 parts connecting in 45 angles in the corners) and turn it off/remove it. I use incremental values like .25, .5, 1 or 2 for building so I had previously removed all rounding script from the plugin. Now I thought I will download the original once again but modify the digits to 3 to suit my values. Since then the build button crashes the whole program.
Other thing that I tried is to select all the parameters of all the objects near the one faulty and press enter, confirming them. After that a lot more of these brushes broke. So, for now I it would seem that Blender could not position brushes properly thus breaking this plugin. Should this plugin work with 3ds Max so I can abandon this utter garbage app?