原帖地址：[url]http://stackoverflow.com/questions/8547201/xcode-error-failed-to-launch[/url]
I encounter this problem every once in a while. Like the others mentioned, these are the steps I take:
1. Clean (Shift+Cmd+K) ------ Removes all the product files, as well as any object files (.o files) or other intermediate files created during the build process (Apple Doc)
2. Navigate to "[b]~/Library/Developer/Xcode/DerivedData[/b]", delete folder for app in question ------ Derived data consists of project indexes, logs, and build products including intermediate files (Apple Doc)
2. Restart Xcode
One or the other usually fixes it. I haven't had to change Code Signing settings, but that would be my next step. Wouldn't re-install Xcode unless absolutely necessary.
I encounter this problem every once in a while. Like the others mentioned, these are the steps I take:
1. Clean (Shift+Cmd+K) ------ Removes all the product files, as well as any object files (.o files) or other intermediate files created during the build process (Apple Doc)
2. Navigate to "[b]~/Library/Developer/Xcode/DerivedData[/b]", delete folder for app in question ------ Derived data consists of project indexes, logs, and build products including intermediate files (Apple Doc)
2. Restart Xcode
One or the other usually fixes it. I haven't had to change Code Signing settings, but that would be my next step. Wouldn't re-install Xcode unless absolutely necessary.
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