Don't you use DIM??? Or install manually unzip the installer and drag and drop the contents to your runtime folder? The other thing Daz3D is pushing as their installer checks to see if you own the product and for us share folks that is not only useless it could reveal us individually as pirates to Daz3D as you use your account as the connector to the content install...
Daz Install Manager does let you login but you can choose offline mode and drop the IM000etc Zip into the Downloads folder and DIM will see them as to install products and will install them where they belong.
I will write a short tutorial later on how to do this.
Hugs,
AnjaBear