navigation bar- I broke it.

[samrc]

I had a working nav bar. Some pages on top level and a few pages in dropdown below.

Ungrouped to modify text and colors then used create nav bar to group them back again. Rollover color change works fine, all pages are where they belong in the nav bar properties but the drop down menus are not showing. What step did I miss putting the nav bar back together after editing?
Not published, only previewing locally. Screen shot shows all top level with Excel being on the drop down. I previewed the site to my hard drive and the menu never shows Excel now...

Oh..one more thing. I tried putting a link on the top level and removing the link from the top level and still does not create a drop down menu...