I got this error message when trying to load a game from the browser:
*** Security Sandbox Violation ***
SecurityDomain 'https://playerio.s3.amazonaws.com/competitions/ega2012/swf/Nhm-JFy6dEyuemmaE59BSQ.swf?AWSAccessKeyId=1Q3ETXSFA8S2F2TSA9R2&Expires=1361787227&Signature=TBCVKQDGlxthLj2YhoumxTxUGOo%3D' tried to access incompatible context 'http://cdn.playerio.com/rts-tvkyczvzk5uwqv8z12rw/Game2build29.swf'
SecurityError: Error #2121: Security sandbox violation: LoaderInfo.content: https://playerio.s3.amazonaws.com/competitions/ega2012/swf/Nhm-JFy6dEyuemmaE59BSQ.swf?AWSAccessKeyId=1Q3ETXSFA8S2F2TSA9R2&Expires=1361787227&Signature=TBCVKQDGlxthLj2YhoumxTxUGOo%3D cannot access http://cdn.playerio.com/rts-tvkyczvzk5uwqv8z12rw/Game2build29.swf. This may be worked around by calling Security.allowDomain.
at flash.display::LoaderInfo/get content()
at Loader3_fla::MainTimeline/onCompleteHandler()[Loader3_fla.MainTimeline::frame1:86]
It says you can workaround this error by using Security.allowDomain(), but I am not sure which domain to allow!