Drop down menu error

Hi,

I have an issue with a drop down menu in the nav bar; when I click on it, it opens up a narrow box, but no links are displayed … ( I have several drop downs included and only one has this problem).

Any suggestions?

Thanks,
Marco

I found the same issue and it is only related to last item in the menu to the right.

In my case it*s the second item (out of 4 total).