Flex 4 <mx:Component> could not resolve
apache-flex, flash, flex3
Solution
With Flex4 you'll want fx:Component instead
Problem
I am using flash builder 4 to run sample application from "Getting Started with FLEX 3", but the code can't run because there is one place that FB4 can't resolve, I guess this is because the library has been obsolete but after a tons of search I can't find the solution. Thanks. Bin