Hi Jens,

There is no guarantee on this.

It depends on the changes that were done in a certain version. If these changes had no influence on the communication between client and server, it will work. But if something changed in the communication, it will fail. To be sure that all communication works as designed, always use the client version that comes with your server version. As Koen indicated the DataMiner Cube Start Window is indeed the best way to avoid incompatibilities.