Plugins not moving to installed page , and No plugin Tabs appear

Somthing goes wrong with openfire 3.9.3 using Mac OSX 10.9 and java build 1.8 ,

when i try to install plugin and click + button, it will download plugin jar file to the right distination /usr/local/openfire/plugin folder, but it wont appear in admin panel as installed plugin and no tabs shown for the plugin …please help ?

Maybe your plugin code is error

you must be upload your “jar” through admin panel

Can I read your plugin code?

In My case, only one plug-in appears in the plug-ins installed page, this is "Asterisk-IM Openfire Plugin " all others are marked as installed but does not appear.