We are having a few problems with the 2018 version of Landmark which we are slowly working through. However, it appears that you can not uncheck the Update Plant Database with Vectorworks Plant Definition Changes option, or remove unwanted workgroup folders.
We think that this is the cause of a very long lag time between each and every plant tool operation - it is actually totally unworkable. Is anyone else having the same problem. Is there any work around or is the only option to go back to previous versions.