我收到这两个错误，不知道如何在Xcode 6.4中修复它们
ld: file not found: /Users/dev1/Library/Developer/Xcode/DerivedData/proj1-gamqrcytwytvxwbqssizthnsmczk/Build/Products/Debug-iphoneos/proj1.app/proj1
clang: error: linker command failed with exit code 1 (use -v to see invocation)
(null): error: unable to open executable '/Users/dev1/Library/Developer/Xcode/DerivedData/proj1-gamqrcytwytvxwbqssizthnsmczk/Build/Products/Debug-iphoneos/proj1Tests.xctest/proj1Tests': No such file or directory
我已将源代码移动到另一个文件夹。我已经清理了项目
我不确定我还能做些什么。