Hi, I'm having exactly the same problem, but the link given below returns a 403 for me, even though I'm fully logged in to the developer program. I've tried completely removing everything to do with Xcode, and the Library/Developer directories, but nothing works. I'm stuck, can't run any simulators, can't do any development. My platforms list shows several simulators on disk, but none of them work: Can't add new ones because there aren't any OS's to link the simulator to... Help! Wondering if I should use my code level support request to ask Apple for help! Thanks, Darren

Hi, Anyone found a solution to this yet? I raised a TSI, but not a lot of support. Xcode is dead for 2 weeks now. I found a few directories missing below /Library/Developer/CoreSimulator/Images/ from various error messages but it still thinks it has the simulators installed so won't reinstall then, and the ones it thinks it has don't exist. Cheers...

After lots of fighting, managed to clean out all the runtimes with a combination of: xcrun simctl runtime delete all and killing the CoreSimulator processes and then full shutdown and restart. Then Xcode saw there were no runtimes and let me install them cleanly.

Hi, Afraid I didn't notice any feedback ID. It would have been submitted under darren.keverne (at) me.com, or dkeverne (at) dazzlee.net If you need, I can raise another one. Thanks, Darren

Hi, latest one submitted as FB13279339, I also found the other one, didn't know about the feedback assistant, you can see I was quite irritated in FB13277636 as I'd only just solved the problem with runtimes not loading! Thanks