XCode 6 Beta 4 error - "An error was encountered while running (Domain = com.apple.CoreSimulator.SimError, Code = 146)"
Solution 1
I quit both Xcode and the simulator and then restarted. These steps solved the problem.
Solution 2
I had issues as well when I first updated. I did not get the same error as you. However, I was able to get things working by deleting my Pods (the project uses Cocoapods) and reinstalling them. I also quit and restarted Xcode as well as the Simulator. I'd also try restarting your computer. Good luck.
Solution 3
I seemed to get this working again in Beta 4 by following instructions from the following question:
Error opening iOS Simulator with iOS 8 beta version: "Unable to boot the iOS Simulator"
I had to reset a few times and had to do some of the steps multiple times, but my program now builds and runs on the simulator.
TenaciousJay
iOS Developer who loves hockey, soccer and video games!
Updated on June 21, 2022Comments
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TenaciousJay almost 2 years
Just updated from Xcode 6 Beta 3 to Beta 4 and everything seems to build fine but when the simulator tries to start up I get:
An error was encountered while running (Domain = com.apple.CoreSimulator.SimError, Code = 146)
It was building fine on Beta 3 so I'm assuming this might be a Beta 4 bug but thought I'd throw this out there just to make sure. Any ideas?