1. ”xx“is missing from working copy
终端下打开提示你missing 文件的路径：cd 缺少的文件的路径
svn命令删除missing的文件：svn delete 缺少的文件的名字
2. objc[30186]: Class PLBuildVersion is implemented in both /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/System/Library/PrivateFrameworks/AssetsLibraryServices.framework/AssetsLibraryServices (0x124802cc0) and /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/System/Library/PrivateFrameworks/PhotoLibraryServices.framework/PhotoLibraryServices (0x1246196f0). One of the two will be used. Which one is undefined.
Xcode --> Edit scheme --> Run --> Arguments --> Environment Variables 添加
name:OS_ACTIVITY_MODE,value:disable
（有时候不管用）
