Since the release of Joomla 3.4 I have run into a problem on numerous occassions and lately a user of CeltaWeb Visitors had precisely the same problem so I thought I'd share my answer. When you have ever recieved the message below read on to find out why it takes place and how you can fix it.

Another menu item with the exact same parent has this alias. Error constructing Admin Menus

I saw this difficulty mostly with Joomla 3.4 web sites upgraded with JUPgrade and so on but I have also encounter it far more not too long ago. This message usually happens if an installation fails along with a proper cleanup does not occur which leave menu entries behind inside the jos_menu table.
Note: jos needs to be replaced along with your Joomla installations table prefix.

The best strategy to fix that is to uninstall the element, then open up phpMyAdmin and delete the orphaned menu things related to the component in the #_menu table. I have also had good results with deleting the menu items after which installing once more without having uninstalling initial! it is your selection.

So to acquire began open up phpMyAdmin and click the SQL tab at the best from the phpMyAdmin window after which paste inside the code below remembering to replace jos with your table prefix after which click Go

delete FROM `jos_menu` where title like "COM_CELTAWEBTRAFFIC%"

Note: COM_CELTAWEBTRAFFIC should be replaced with the name of the component you wish to remove.

After you receive the 1 row deleted message reinstall the component and should now see it listed in the admin menu.

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