菜鸟问题

oscar2

为什么我安装了Emerald themer后，更换主题没有任何的效果！
在终端运行：emerald
emerald: Could not acquire decoration manager selection on screen 0 display ":0.0"
运行 emerald-theme-manager
(emerald-theme-manager:6175): Gtk-WARNING **: Theme directory scalable/apps/24 of theme OSX_Iconset has no size field
是个什么问题阿？