…since I use blender for a while (not that I’m very capabale in it) and being always on the bleeding edge by compiling the latest version daily, I made my first patch (request) today. 
It is about using the navmesh-generator which automatically creates a navmesh using the selected objects.
That works quite good as long as you don’t use group-instances. So today I took me some time to get into it and somehow fix it. And actually I made it. Code is not very elegant, but that is a matter of time. I struggled over a bug that keeps crashing blender which I considered related to my code change,…actually they seem to be not related
So let’s see what happens. Would be an honor to contributed code to the best project of the world
(Beside gamekit, of course )
http://projects.blender.org/tracker/index.php?func=detail&aid=32295&group_id=9&atid=127
