Probably corrupt entries in _menus. Review _menus database table then find the below.
Menutype: main
Titles: COM_COMPROFILER, COM_COMPROFILER_SHOWUSERS, COM_COMPROFILER_SHOWTAB, COM_COMPROFILER_SHOWFIELD, COM_COMPROFILER_SHOWLISTS, COM_COMPROFILER_SHOWPLUGINS, COM_COMPROFILER_TOOLS, COM_COMPROFILER_SHOWCONFIG
Once found, delete them, then re-install CB.