Попробуйте установить BugFix
This PAServer Hotfix provides fixes for: • building OS X 10.11 (El Capitan) applications with Delphi, C++Builder and RAD Studio 10 Seattle • building iOS applications that run on iOS 7, iOS 8 and iOS 9 using the iOS 9 SDK with Delphi, C++Builder and RAD Studio 10 Seattle
http://www.fmxexpress.com/upgrade-support-for-ios7-ios8-ios9-and-osx-el-capitan-with-this-hotfix-in-delphi-10-seattle/
http://cc.embarcadero.com/Item/30398