A customized project created in an older version of ArcView was opened in a more recent version but was not updated when prompted.
1. Open the project file in a text editor. The first few lines looks like this:
2. Change the Version number from the current to an older one. In this example: 31 to 30.
4. Reopen the project in ArcView.
5. Allow the Project Updater to update the project.