ArcGIS Viewer for Flex 2.4 Error

[City_of_Port_Angeles_GIS]

I just downloaded the 2.4 API and imported it into Flash Builder 4. I noticed right away that the src folder had a red "x" on it! When I clicked on the folder I got an error message in the problems window that said: Could not resolve <s:ViewNavigatorApplication> to a component implementation.    WebMap.mxml    /BasicMap/src    line 5    Flex Problem

I can see the viewnavigatorapplication1_creationCompleteHandler function, but I can not find the ViewNavigatorApplication function. Until this error is fixed the code will not compile. Any help would be appreciated.
Thank you,
Billy

[City_of_Port_Angeles_GIS]

Bjorn,
   Oops, my bad. I accidentally reloaded the API instead of the Viewer. Just loaded the Viewer and it works just fine. Thanks for all the help.
Billy