Which version of Xcode are you using? I have version 6.4 and it runs O.K. under El Capitan beta #3.https://forums.developer.apple.com/thread/13170
Seems Interface Builder doesn't work, any solution?
I know it's working on DP3, I said on DP6Which version of Xcode are you using? I have version 6.4 and it runs O.K. under El Capitan beta #3.
* Xcode processes may quit unexpectedly if older iOS Simulator runtimes (Xcode 6.x) are present on disk.
I'm wondering if I can simply remove the old simulators?? Anyone try that?
a quick fixed posted on Apple Dev forums to get Xcode 7 working on DP Beta 6 build:
cd /Applications/Xcode-beta.app (or wherever your Xcode 7 beta 4 is located)
cd Contents/Developer/Platforms/iPhoneSimulator.platform
cd Developer/SDKs/iPhoneSimulator.sdk/usr/lib
sudo mv dyld_sim dyld_sim.orig
tested it myself and it works.