Hello,
My problem is described here: http://www.opengl.org/discussion_boards/ubb/Forum2/HTML/004171.html
Long story short…I found that if i hide/show my toolbar at runtime, then my rendering disappears. It was not changing the focus to a new tab that made it disappear, but hiding the toolbar with ShowControlBar().
So…my question is how to deal with this? Why does this happen?