Error. update app

Question

Hello.
when I update application, show this error:
"This application cannot be installed because this installer
has been mis-configured. Please contact the application author for
assistance."
How remedy this defects?
code:
var updater:Updater = new Updater();
var airFile:File =
File.applicationDirectory.resolvePath("Update.air");
updater.update(airFile,"2.0");
I load file Update.air in folder with AIR-project.

Answer 1

Each AIR app has an application descriptor file. When you
build your app in Flex builder, FB creates it automatically for
you. If your application mxml file name is MyApp.mxml, then FB
creates the descriptor as MyApp-app.xml. If you use aptana plugin,
it creates descriptor as application.xml. In the descriptor there
is an element called <version>. This version # in Updater.air
app should match the version to update() method call. When you
export a release build, the descriptor will be added to the air
package as application.xml in META-INF\AIR folder.
If you want to see what's in your Updater.air, make a copy of
the Updater.air as Updater.zip and look for
META-INF\AIR\application.xml inside the zip. You will see
<version> element in the application.xml file.