To copy a project, select the project once on Project Explorer, select [Copy] from the pop-up menu that appears by right-clicking, and then select [Paste] to display the dialog. Please specify a name. The above will create a folder for the newly specified project in the workspace folder. In addition, please delete the configuration file for debugging (* Debug.launch.) And create it again. You can create a debug configuration file by selecting [Configure]> [Set LEXIDE-U16 (OMF) Debug Configuration] from the pop-up menu that appears when you right-click with the project selected.