对我来说，一个简单的产品->清洁工作很棒

我发现在Build Options中将我的编译器更改为LLVM 6.0对我来说就足够了(xcode 6.1)

我使用Xcode6 GM。我遇到了同样的问题。我所做的是去构建设置->构建选项。然后我将“Compiler for C/ c++ /Objective-C”的值改为默认编译器。

我最近在Xcode 6.0.1中运行一个旧项目(最初创建于Xcode 4.x)时遇到了同样的问题。

我通过将“建筑设置”中的“架构”更改为默认值来解决这个问题，即“标准架构(armv7,arm64)”。

希望这能帮助到有类似问题的人:)

None of the provided answers worked for me. In my case, I finally fixed the error by updating the target architectures in Build Settings/Architectures/Valid Architectures to $(ARCHS_STANDARD), as arm64 was missing. This was not prohibiting the project to build, although a warning was issued recommending updating the valid architectures, but the "app could not be opened" error was shown at run time. I surmise this error is rather generic and not always linked with a permission issue, but may be displayed when the generated app package is invalid.

我已经通过清理构建文件夹来修复它。刚刚进入“产品”菜单和选项+点击“清洁”。在那之后，一个问题解决了。