This could have happened when you installed from the .zip directly to your copy of Poser.

Some .zip/.exe are set up to install one of two ways:

Metacreations/Poser/Runtime... etc etc etc
or
Curious Labs/Poser/Runtime... etc etc etc

If you have the Curious Labs version and install the .zip with the Metacreations file name then Poser will create a duplicate Runtime folder... hence the duplicate runtime folders you had.

To avoid this problem, I make a temporary folder and install the .zip to that folder and then cut and paste the folders within the geometries folder to my version of Poser gemoetries, then characters/props/poses, etc... Problem solved, no duplicate Runtime folder issues to deal with. Then delete the temp folder.

Jazz

Vive Bene.  Spesso L'Amore.  Di Risata Molto.
Live Well.  Love Often.  Laugh Much.