Software Instruments Missing After El Capitan

Hi y'all,

Just recently upgraded to El Capitan and Logic X 10.2 simultaneously, after being a long time user of 10.0.6. Yesterday I was using the SoCal producer kit and a bunch of other software instruments, but then Logic crashed on me. When I reopened logic, I was greeted with the "Some additional software content is missing. Would you like to download?" message, EVEN though all my software files are downloaded and in the Application Support folder. I hit download anyway, and after it "installs," producer kits are missing from the sidebar along with many other software instruments. Ive wiped Logic X completely from my drive, deleted plist files, did a reinstall of all the software instruments as well but still nothing. Any advice is greatly appreciated... desperate times!