When I try to compile a flex app with the Flash 4.5 (Hero) SDK it does not compile, and I get many errors(which I don't understand), as well as the a Null Pointer Exception. please view last night's errors here: http://hawaiiflash.org/Hero.zip Today I could do do a "stack trace" (see video) the error log is here http://hawaiiflash.org/hero_error.log the video of me adding the SDK and compiling an empty Hero application is here: http://www.screencast.com/t/3OF2WsEA Thank you, John