The updated Vector LandClass Libraries installer which was included with Real NZ NZCH was designed to remove the need for the Autogen Configuration Merger Tool, which runs every time you run the simulator to merge any custom autogen descriptions. From version 4.4 of Prepar3d, the merger tool was no longer required, and I made the necessary changes to the VLC Libraries to make this work.
However it turns out that Prepar3d's new ability to handle autogen description merging doesn't work for library objects, and the result was all other autogen library objects -- such as those supplied by Orbx -- are now disabled.
My own custom autogen objects are simply a couple of different water tanks, which are used in Real NZ Dunedin, so the simple fix is just to remove my 'default.xml' file from the Vector Landclass Libraries installer -- this is located here:
...wherever you installed the VLC Libraries.
You can simply delete the 'default.xml' file in the AutogenX folder, but to be safe maybe just disable it -- I just add a '.off' extension to the filename, so it becomes 'default.xml.off'.
There will be an updated VLC Library installer shortly, but in the meantime you can fix this yourself if you feel confident.