To prevent these errors when you work with or view your Web page, use one of the following methods.
Method 1: Create a Navigation Bar Structure in Your FrontPage Web
- Open your Web page.
 - On the Insert menu, click Navigation.
The Insert Web Component dialog box appears.
 - In the Component type list, click Link Bars. In the Choose a bar type list, click the type of navigation bar you want and click Next.
 - Click Finish.
 
For more information about how to create a navigation structure in a  FrontPage Web, click 
Microsoft FrontPage Help on the 
Help menu, type 
navigation in the Office Assistant or 
the Answer Wizard, and then click 
Search to view the topics 
returned.
Method 2: Rename the Vinavbar Folder
Rename the following folder:
C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\50\Bots\Vinavbar
-to-
C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\50\Bots\Vinavbarold