error when activate

When I activate this plugin, no error in admin panel
But Cache & Security Menu item didn’t show
So I check apache error logs and found this error in wp-admin directory

[30-Oct-2013 15:38:04 UTC] WordPress database error Multiple primary key defined for query ALTER TABLE wp_tr_security_log ADD PRIMARY KEY (id) made by activate_plugin, do_action(‘activate_tr-cache-and-security/plug.php’), call_user_func_array, tr_cache_security_activate, include(‘/plugins/tr-cache-and-security/inc/install.php’), dbDelta

Same server has another wordpress site run find with this plugin

Can you check it why?

http://ww.wp.xz.cn/plugins/tr-cache-and-security/