New to Animate - #1010 error pls help

Dear all, I keep getting this error. Not sure, what needs to be done. Initially it seemed fine..

thanks.

Aris

TypeError: Error #1010: A term is undefined and has no properties. at Main/selectQuestions()[/Users/aristotlemn/Downloads/codecanyon-klxjGZe0-quiz-marathon-trivia-with-cms-android/iqm_app/without ads/Main.as:683] at Main/xmlLoaded()[/Users/aristotlemn/Downloads/codecanyon-klxjGZe0-quiz-marathon-trivia-with-cms-android/iqm_app/without ads/Main.as:656] at flash.events::EventDispatcher/dispatchEventFunction() at flash.events::EventDispatcher/dispatchEvent() at flash.net::URLLoader/onComplete() TypeError: Error #1009: Cannot access a property or method of a null object reference. at Main/goBack()[/Users/aristotlemn/Downloads/codecanyon-klxjGZe0-quiz-marathon-trivia-with-cms-android/iqm_app/without ads/Main.as:1001] at Main/clickPlayAgain()[/Users/aristotlemn/Downloads/codecanyon-klxjGZe0-quiz-marathon-trivia-with-cms-android/iqm_app/without ads/Main.as:344]