Using multiple setup files in combination with various project files may result that chosen files are not compatible, or in other words, project file doesn't include all plugins that setup file requires. Consequently DewesoftX reports error message to inform you that your measurement will not be complete.
Attached video (Video1.mp4) demonstrates that new project (empty) doesn't have OPC UA included while setup has been created with OPC UA channels. DewesoftX reports error that load of the setup hasn't been complete.
NOTE To understand difference between setup file (*.dxs) and project file (*.dxp) you can learn more in the article: Difference between Project file and Setup file
In order use the setup file which has been used before with the new project file you can modify setup file with clicking on "Clear missing plugins messages" and then save setup file once again. Please refer to attached Video2.mp4.