i tried restarting with a new project in XIDE.
in the images below you can see my simple app, i suspect the problem is the ResouceID, but i can't find a solution.
By the way the bTools.xxx.dll are compiled following your (really appreciated) guide.
The problem is because bBrowser is a VO GUI control but you are trying to put it in a Windows.Forms form. Theoretically it would be possible to do that, but it is not easy.
Normally you would put bBrowser in a VO-style window, for example create a new app in XIDE, select the "Standard VO MDI" template, this will create an app very similar to what you create in a similar way in VO. There you can create a new window (with Tools->VOWindow Editor) and put bBrowser in it like any other control. Also if you put your cavowed.inf and tpl files from your VO folder to \XIDE\Config\, then bBrowser should be visible in XIDE's toolbox, same as in VO.
But if you want to create a pure .Net app (no VO GUI), then it's more complicated. bBrowser is designed to work with VOGUI, so obvious answer is that you need one of the grid controls available for winforms or WPF in .Net. Although it would be an interesting exercise trying to make bBrowser work in winforms as well, but it will be a lot of work.
Btw, I am seeing you are getting dozens of "165" warnings, which are cluttering the compiling results. In the beginning, I would suggest to just disable reporting this specific warning, by using a /nowarn:165 in the compiler options (App properties/Compiler page, first edit on top). Or you can go to Tools/Preferences/compiler and enable "Always apply /nowarn:165".