OS X 10.9.2，tmux 1.9a 通过 brew 安装。在 tmux 中：
$ open /System/Library/CoreServices/Finder.app
LSOpenURLsWithRole() failed with error -600 for the file /System/Library/CoreServices/Finder.app.
$ open /Applications/Safari.app
LSOpenURLsWithRole() failed with error -600 for the file /Applications/Safari.app.
$ open /Applications/Xcode.app
(Success)
输出 tmux：
$ open /System/Library/CoreServices/Finder.app
(Success)
$ open /Applications/Safari.app
(Success)
$ open /Applications/Xcode.app
(Success)
导致此问题的原因是什么，如何解决？