Apple's OSX 10.11 El Capitan is Causing Trouble with Audio Software.
Recently we announced that Native Instruments and Pioneer have been experiencing problems with Apple's OS X 10.11, a.k.a, El Capitan. Unfortunately, we can now add Serato DJ and Serato DJ Intro to the list.
Serato advises users to wait before updating to El Capitan
Serato advises their users not to update to El Capitan until the issues have been resolved. If you're experiencing problems with Serato in El Capitan, you can go here for help.
Keep you eye on this page for updates from the above-mentioned suppliers.