Continuing my testing with, I used to have Coppermine installed as a gallery on my site and a menu item that linked to it directly. It wasn’t the best way to integrate and Coppermine because I know there are that will bridge the two. Anyways I wanted to test the external link in the Menu Item. I left the alias field blank or I named it “gallery” the same as in my setup.
My Menu Item Details were:
Menu Item Type : External URL
Menu Title: Gallery
I got the following error message:
Save failed with the following error: A first level menu item alias cannot be ‘gallery’ because ‘gallery’ is a sub-folder of yourinstallation folder.
I did some research and apparently this is an existing bug and the here. The only way around this is to rename the alias for the menu item to be something other than the folder name or any folder name in the Joomla installation folder. After I renamed the alias to be ‘photos’ I was able to save the menu item. I hope they fix this soon.