I use poser 7 & pro2012 & Daz 3a
I keep my runtime files on 2 external HHD - 2 TB drives
I share my runtimes files with my poser and daz program with no problems
I have 3 runtimes
one runtime just for characters and morphs, and their clothing and accessories & lights
I have another runtime just for environments & lights and special props like Cars, Boats & vfx tools, read me files and end user licenses etc etc. etc….
and my 3rd runtime just for external shaders and textures custom lights and other custom stuff I made myself
I do not use any of the meta data or uninstallers. in poser and daz3a, they don’t work anyways in those programs
Please don’t ask me anything about Daz4 I’m to stupid to figure it out to make it work correctly, or it just don’t like my win 7 computer.lol
I also install everything into a Sandbox file first before i move it permanently to my runtimes. only because I’m OCD when it comes to what I use and install in my computer drive(s)
You can share and add runtime files in both poser and Daz by going to your Edit Tab on top of each of the programs scroll down to preference then click the content manager and choose the runtime files manually
At least that is what works for me 