Name 'item' conflicts with existing module, project, or object library

This error has the following causes:

• You loaded a form, User Control, User Document, or Property Page that contains objects with conflicting names. This can occur if the file was edited outside of Visual Basic.
• This error can occur when you rename a form to the same name as the project, another form, or a module. It can also occur when you rename the project to the same name as a form or module.