This message comes out when you are not using the proper Extension Manager to install the component. You need to use the proper extension manager version for the flash cs version that you have. So, if you have Flash CS4 you need extension manager for cs4, if you have flash cs5 you need extension manager for cs5. In order to avoid this kind of problems, just install the component by opening extension manager directly from flash(help->manage extensions). This way the flash will open the proper extension manager.