A bunch of ActionScript libraries use rather "loose" variable-typing practices. One such library is TweenMax. While I love this library, it really annoys me to see all those warning messages show up in FDT when I’m coding. How can one get rid of those ?
Well it turns out that the good people at PowerFlasher thought of just this problem. Knowing where to look is the hard part but this is what I’m about to show you now. Simply right-click on your Flash project in the Flash Explorer panel and select Properties.
Select FDT Build Path and then click on the offending source folder. You then only need to untick the General Problems/Tasks checkbox and you are done ! Of course, you need to keep your external libraries in a separate folder but this is just a good habit to take.
In case you do not know how to create another source folder here is the (very simple) procedure : right-click your project in the Flash Explorer window, select New and then Source folder. You now have a new source folder in which to keep your external libraries.
Hope this could help you out.