Please ensure you are following the exact steps of how to enter a new project:
1.Select the blue hyperlink Project: when in a workorder, or go through the menu steps Options -> Edit -> Projects to open the Edit / Add Projects screen
Click on the Add button so you can create a new project by entering the project name, and the project information:
Click on SAVE which will bring you back to the original Edit / Add Projects screen.
What is happening is that you are attempting to edit when there are no projects yet created.