If you are getting errors when attempting to create a DVD menu, follow these steps to fix them: 

• Go to "File" > "Manage movies" > "Export". Give the movie a name that is easy to remember and export it to a location where it will be easy to find. 
• Restart the program and create a new project.
• Go to "File" > "Manage movies" > "Import" and open the movie you just exported. 
• Remove the empty movie which was automatically generated when you created the new project so that only the imported movie remains. 
• Save the project under a new name and try creating the DVD menu again.