I have cleaned and rebuild the project / solution without any succes.
My colleagues and I have the same:
- Code ("get Latest Version")
- NuGet packages
- The App.config-files are also the same, so there is no difference in the connectionString.
- The licenses.licx-files are also the same and use the same Versionnumber as the app.config-files.
Please feel free to ask me for addition information if the current information I listed was too little!