Xcode 6 Beta Toolchain Error

3 Solutions Collect From Internet About “Xcode 6 Beta Toolchain Error”

Refreshing my Accounts under Xcode > Preferences… > Accounts > View Details… did the trick for me.

I experienced this exact issue and spent some time trying to figure out what the cause was. For some reason, it worked on my physical iOS device but refused to run in the iOS Simulator and that was the error presented.

In my case, I recently added a target so I could create a custom keyboard and before that it did run without issue in the simulator. So I decided to delete the new target, recreate it, then revoke my iOS developer certificate, and then delete my certificates and everything in Keychain (there were many duplicates). I recreated them, then created a new App ID that uses the exact same identifier as the Bundle Identifier for my keyboard target (found in the General section after selecting the keyboard target), then I created a provisioning profile for that App ID. Then I went into the Xcode Preferences and refreshed, and it automatically “renewed” my now invalid provisioning profiles. Finally, I went through the project, main app target, and the keyboard target and set up the Code Signing sections. Hit Command R and like magic, Build Succeeded.

It was kind of a pain, but it came down to some issue with the code signing and provision profiles. Hopefully you will be able to resolve your problem with this information.

My problem was that I have used a different developer account for management of my provisioning profiles. After installing the latest provisioning profiles I had to add this new developer account here: Accounts under Xcode > Preferences… > Accounts > View Details…
(as mentioned by Leyyinad.)

thought it might help someone..