I've had weird issues with the TabNavigator in the past. Try setting creationPolicy="all".
It sounds really simple but that fixed one of my issues where the app would hang in Internet Explorer.
No, did not help. I have this in a module and I tried setting that in both the main app and the module and it did not help. Works fine in IE7
I added the sample code to an application and it displays fine in Firefox.
Maybe boil your code down to simplified yet complete app that still exhibits the issue, and post that code.
It appears to be something to do with the HTTPService and TabNavigator being used at the same time. I have an HTTPService call in the CreationComplete of the module. If I remove the TabNavigator -or- if I remove the HTTPService, it works.
What I wound up doing is using a TabBar to show/hide a group of Canvas'. That seems to work fine.
is your tabNavigation within Module ?
and are you not ussing Tabnavigation in Main Application at all?
if so problem is with linking:
to your main application code,
that will solve it.