Karamba 1.1.0 Hacker's Guide.chm Missing <summary> documentation

Hello guys, 

I am trying to use Karamba to conduct a FEM analysis on a tree structure. As I need to assign different cross-section (diameter of the circular section) to each element according to the tapering of a tree, I decide to use Karamba scripting within grasshopper. 

The problem is the Karamba 1.1.0 Hacker's Guide chm file is not working properly, I assume. For example, if I choose "Model.febmodel Property", the summary section shows in red "[Missing <summary> documentation for "P:Karamba.Models.Model.febmodel"]". This happens to quite a large number of them. 

So, anyone know how do I fix this? 

P.S. If there is a way that I can assign different cross-section to each element, it would be much more helpful as well.