I apologize by that. HD Flowers 3 should not be included in HQ Catalog v.1.2.4, the folder was added to the installer by mistake. We will fix it.
The problem with HD Flowers 3, is that includes some plants as separated meshes/groups, and the library browser doesn't support this format. This problem happens also with XFrog and Evermotion collections.
We are working to fix this limitation in the upcoming Forest 4. Once it is released, we will create catalogs for these libraries.