Unexpected error creating a relationship

I am having the same problem when trying to create relationships in the relationships tab with the latest update (2.43.4647.541). The error appears even when I delete relationships that I had already created using this method and try to recreate them, but I know this is not a problem with my datasets because I can create them without any issues using the Manage Relationships method.

 Edit: I have used the method suggested by MrPowerBIPro and it worked, thanks. However, I still don't know why it doesn't work the other way around as it used to before.