Unable to determine simulator device to boot. - Xcode

ios xcode ios8 xcode6
footyapps27 picture footyapps27 · Jun 3, 2014 · Viewed 19.9k times · Source

I just downloaded Xcode 6 & played with it a bit.

After switching back to previous version of Xcode and running in simulator, I keep getting this error.

Unable to determine simulator device to boot.

How do we resolve this?

Thanks in advance.

Answer

MarekR picture MarekR · Jun 3, 2014

Make sure you have only one iOS Simulator instance running in the Dock.

Related questions

Xcode 6 iPhone Simulator Application Support location

In Xcode 6, I have an app I'm using Core Data in, but there is no folder in Application Support for the iOS 8 iPhone Simulator. Where are my files and Core Data sqlite database being stored?

Read More
Xcode6:Embedded binary is not signed with the same certificate as the parent app

After I add Today App Extension Target,I become impossible to compile project. below is error: error: Embedded binary is not signed with the same certificate as the parent app. Verify the embedded binary target's code sign settings match the …

Read More
Xcode 6 keeps renaming my app's directory in iOS8 simulator after each run.

I'm running Xcode 6 Beta 5 but this has been happening since the first beta. My app's directory in the simulator keeps being renamed after each run. It took me a while to figure this out. I'm using this to get the …

Read More