UI Spy can't navigate portions of FireFox

I was hoping to automate FireFox, but I am unable to navigate to certain controls. UI Spy is also unable to navigate to the controls and gives the following exception:

UI Automation tree navigation is broken. The parent of one of the descendants exist but the descendant is not the child of the parent

Is this most likely a FireFox issue or a problem that will be worked out in future versions of .NET 3? Any ideas to get around this?

Thanks!
James

[639 byte] By [staja2] at [2008-2-25]