将 xcode 升级到 4.2 “签名无效”
自从我将 xcode 升级到 4.2 版本后，我无法再更新我的应用程序。 我收到以下错误：警告：应用程序未通过协同设计验证。签名无效，或者不是使用 iPhone 分发证书进行签名。 （-19011）
我尝试了以下方法来尝试解决此问题，但它不起作用：
- 我从网上重新下载了临时文件（分发和开发）并重新上传了它们
- 我完全卸载了 Xcode 并重新安装了它
- 我重新创建了临时文件
不幸的是我没有运气。为了继续开发 iPhone 应用程序，我应该做什么？
谢谢
Since I upgraded xcode to the 4.2 version I can't update my app any longer.
I get the following error: warning: Application failed codesign verification. The signature was invalid, or it was not signed with an iPhone Distribution Certificate. (-19011)
I've tried the following things to try to fix this problem,but it did not work:
- I re-downloaded provisional files (both distribution and development) from the web and I reuploaded them
- I completely uninstalled Xcode and reinstalled it
- I recreated the provisional files
Unfortunately I had no luck. What I'm supposed to do in order to continue developing iPhone apps?
Thank you
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临时有两种可能性：
有时您只需要重置项目中的设置。转到项目的“代码签名身份”设置并确保该值有效。即使它看起来有效，但也可能不是。尝试一些其他可能的设置，看看它们是否有效。
您的证书可能已过期。如果您的开发者计划已过期，则必须续订，但开发者证书都会在某个时候过期并需要续订。
Offhand there are two possibilities:
Sometimes you need to just reset the settings in the project. Go to the project's "code signing identity" settings and make sure the value is valid. Even if it appears valid it might not be. Try some of the other possible settings and see if they work.
It might be that your certificates are expired. If your developer program has expired you'll have to renew it, but the developer certificates all expire at some point and need to be renewed.