Xcode iOS组织者提交到应用商店收益“存档无效”错误

我刚刚从Xcode 3切换到4.当我尝试上传我已归档到管理器的应用时，收到此错误：

I just switched from Xcode 3 to 4. When I attempt to upload an app that I have archived to the organizer, I receive this error:

存档无效。
/var/folders/.../app.ipa不存在
。

The archive is invalid. /var/folders/.../app.ipa does not exist.

这在我登录itunes connect后，选择要更新的应用程序并选择下一步。我不知道从哪里开始试图找出导致此错误的原因。如果我遗漏任何对诊断有用的信息，请告诉我。谢谢

This happens after I log in to itunes connect, select the application to update and select next. I am not sure where to begin trying to figure out what is causing this error. Please let me know if I am leaving out anything that would be useful for diagnosing. Thanks