logic pro x: addional contents install but they don't
I've downloaded and installed Logic Pro X as well as all available contents. However, some contents are still not available. A message pops up "Additional content needed. Download now?" After confirming "yes" the download and installation works as it's supposed to. But after installation they're still grey and not available. Same message ("Additional content needed. Download now?") pops up, same download starts if clicked on yes. Restarting the program won't help. What's the problem? Configurations?
MacBook Pro, OS X 10.9.5