Air application shows no GUI, any help?

Hi all,
I built and run an AIR application in Flash Builder 4 IDE. The code works fine, the application runs and there is no error or warning. The GUI shows up okay and there is no any error when I run "Export Release Build" to create the myApp.air to make the application installable.
With the myApp.air file, when I install this application, the installation goes okay but when I run the installed myApp application nothing shows up. I mean no GUI. If I check the task manager, the app seems running there as a process.
This whole thing remained the same when I used FLEX Builder 3 as well as when I used command line build.
Please help me resolve this problem.

KGLAD, I appreciate your time and suggestions.
I am sorry but I think I was not able to make my problem clear to you or may be didn't get you quite well.
I have an application which runs fine when I build and run it in the IDE. There is no error or warning at all.
I can export this application to application.air without any error or warning.
The main problem is - after I install the exported application.air app, nothing shows up. If I check in the task manager, the app seems running as a process.
I can see all the required files loaded in the application.air package when I open it as a zip folder.
Please tell me what things should I try to trace and when and where? Also share me some ideas on how to fix it.
For your info:
This app is AIR 1.0 app compiled with flex sdk 3.0 in Flex builder 3
The problem remains same if I use flash builder 4 or do the command line compilation with adl and adt.
I am using windows vista OS [Business Version].

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