>I assume I don’t need them in the Flash builder directory as well. To my knowlegde is's definately crucial to manually add the SDK to your IDE as it is described in the above link. But if it already appears in your project as default project it seems to be ok. Maybe you want to double check it: Right click at your project->Properties->Flex compiler: The 'default' or 'specifik' SDK should point to 4.15.0.
Sometimes FlashBuilder is a bit messy and sometimes it is helpful to 'clean' a project: Try "Project->Clean..." from the toolbar. HTH, Olaf -- View this message in context: http://apache-flex-users.2333346.n4.nabble.com/Problem-using-latest-SDK-in-Flashbuilder-tp13667p13672.html Sent from the Apache Flex Users mailing list archive at Nabble.com.