after i dwload n open d banned story, there is tis words comes out " The application could not be installed because the AIR file is damaged. Try obtaining a new AIR file from the application author".So , wat shud i do now ?please help me!!!!!

after i dwload n open d banned story, there is tis words comes out " The application could not be installed because the AIR file is damaged. Try obtaining a new AIR file from the application author".So , wat shud i do now ?please help me!!!!!
