This is an exception. You only see it in debug mode.
The installed app. runs in non-debug mode and that is why you won't be able to see it.
You can catch the exception if you want.
I will make every effort to debug errors at development time, but can not be 100% sure that they can all be found immediately. Can I set in the compiler option some parameter to 'true' for displaying error messages or something like that?
We don't support such feature.
There is a feature called Global Error Handler in AIR 2 that might be helpful in such situations.
But they are only avalaible in AIR 2.
Ok, thanks for detailed answer)