真迹调试小错误

Issue：The identity used to sign the executable is no longer valid.

Neither restarting Xcode nor restarting my Mac helped.

Solution within Xcode:

1. In Xcode, go to Preferences --> Accounts --> View Details
2. Press the + symbol and select iOS Development
3. Press the refresh button in the lower left corner (called Download all in Xcode 7)

PS:

• Sometimes it may also help to delete invalid provisioning profiles: right-click -> move to trash
• I saw this error exactly one year after signing up as an Apple developer.

后来又遇到一次这个错误，上述方法无效。但是把xcode里的ID改一下就可以了，但是上传到testflight后还是不行。

出现了报错，说证书错误。无奈回去member center把所有的证书起底，最后发现一个development provision根本就没有，重新创建，下载到mac，成功了。