That message pops up if you have one of the pro features enabled, such as cylindrical projection. Please check under Developer menu > show projection parameters. Check the three tabs in the box that pops up to see if anything has accidentally been checked to turn on.
If that's not the case, the 767 may have DRM protection that needs to be authorized. I'm unfamiliar with this plane so you will need to contact the store you bought it from or its developer.