Cause
If you can send a new project file to the display unit, the data in the project file you tried to send may have a problem.
Solution
Follow the procedure below to check if you can transfer a new project file.
Create a new project file.5.2.1 Procedure - Starting/Creating/Saving/Exiting
If you can send a new project file, the data in the project file you tried to send may have a problem. Copy the data for the file to a new project file and transfer it. For the copy procedure, see the following.5.8 Copying a Screen from Another Project
The contents which can be copied with [Copy from another Project] are the contents of the base screen and window screen only. Since other contents cannot be copied, you need to set them again.