Assuming you have both paid versions (UltraHal & Expansion Pack) - (please don't take offense), check to see if you're using any VR Haptek Plug-ins. If so, uncheck them, restart Hal and check it again.
There have been cases reported by others who had experienced problems with this. Personally, I use the VR Plugins with no problems.
In the Search Box at the upper right, type in "expansion pack " (no quotes) and see what results appear. Hopefully some of these might help you.