There is more than one folder with the name '<folder>' and the condition '<condition>'
Folders with the same name cannot be placed in the same deployment project unless they specify different conditions that would prevent them from both being created during installation.
To correct this error
- Double-click the error in the Task List to go to the folder in the File System Editor.
- Delete the duplicate folder, or select the Condition property in the Properties window and enter a different condition.