We are still struggling with Toolbars in SU8.
Our biggest remaining problem, is that that when we load a plugin by hand, rather than having it loaded automatically as SketchUp loads - (we offer both options to users - always load the app, or manually load it from the Plugins menu) - the toolbar appears - but is not docked.
I looked at your code snippet in the other thread, but it is hard to figure out how to put everything together.
Can you, (or someone), provide a .RB which I can execute manually, (not placing it in the plugins folder - but loading the .RB from the ruby console - or later from the Plugins menu), which creates a new toolbar, and docks it properly?
Then I can grab from it what I need, etc. to get it to work with our app.