I updated my machine to OS X 10.11 El Capitan GM and because Xcode 6.4 is no loger supported on El Capitan I also updated my Xcode installation to Xcode 7 GM. The basics seem to work so far, I can build my projects and the iOS 9 simulators do work. Whenever I try to install an older simulator (iOS 8.1, iOS 8.2, iOS 8.3, iOS 8.4) I get an error telling me that the simulator could not be downloaded an an authorization is required.
10.09.15 15:18:43,483 Xcode[598]: [MT] DVTDownloadable: Error Domain=PKInstallErrorDomain Code=100 "Could not download and install iOS 8.4 Simulator. Es ist eine Autorisierung erforderlich, um das Paket installieren zu können." UserInfo={NSLocalizedDescription=Could not download and install iOS 8.4 Simulator. Es ist eine Autorisierung erforderlich, um das Paket installieren zu können.}
I do not understand the issue, when I start downloading a simulator through Xcode a popup comes up and I have to enter my password. Everything seems to work until a little bit later when suddenly the discribed error occurs.
A colleague of mine installed Xcode 7 GM on OS X 10.10.4 and he could successfully install the simulators. It seems as the problem occurs only when using Xcode 7 GM on El Capitan.
Do you also have the same problem? Does anybody have a workaround for the issue?