This problem has me rather stumped. Is there anything untypical about your content folders structure? For example, you don't have two "data" folders (where Genesis morphs are kept)? If these morphs are in the same structure as all the other Genesis morphs and shapes that you can see, it seems very odd that they are not being picked up when Genesis loads. Could it be something to do with "permissions" in the morphs' folders? Have you looked in the Daz log to see if there is an error mentioning one of the morphs?

You might look with "Show Hidden Properties" checked, although these morphs should not be hidden (there are couple of linked morphs that are, but you don't need to access those), and whether you can see the morphs using the Properties Editor (Actor/Female/Real World is one place to look).

Oh, and did you install the Genesis Starter Essentials bundle that comes with your DAZ 4.5 downloads? Not sure if this would be relevant, but it's something should be done anyway.