There is a load of stuff in the second ‘runtime’ that should not be there. Runtime is a Poser content folder, and there should be no DAZ Studio content in there at all.
Normally I would suggest merging the two runtime folders, but there is more to it than that. It looks like you have from ‘Aniblocks’ down to ‘ReadMe’s’ in the Geometries folder? They are all DS content and should be directly in the My Library folder.
It really is a mess. The install path MUST end with ‘My Library’ for all content, Poser or DAZ Studio. NEVER allow the installer to install to My Library\Runtime, or any other subfolder of My Library. Make sure that the installer has a path that ends with My Library, and everything will install into the correct place.
Oh wow !! As Daz 4.5 Pro is all free and being a complete Newbie to 3D anyway I automatically assumed that everything will all have been pre-planned by Daz to go into the right folders to avoid this very situation occuring. As I was never aware or read anything about this when starting rather than leaving it all for the installer to decide which I did, oughtn’t it all to be updated asap to end with “My Library” in any case to avoid this happening to future Newbies who’ve no idea or previous experience of 3D as well ?
Meanwhile thank you, get on with it asap !