CommandBarButton click event doesn't fire always

[Kabs]

Hi,

I have an application related to Word, which creates the new CommandBar
which has around 50 commandbar buttons. The problem is that When I open the
document the commandbar buttons don't get fired always. Sometimes it does and
sometimes it doesn't. However, most of the time the last loaded 20-30
buttonbars are fired. I feel it so weired. Can anyone tell me what might be
the problem?

Thanks