This is such a common problem. I'm surprised they haven't addressed it with their installer. The installer already detects all the copies of Poser you have on your machine. Seems like it would be relatively simple to have the installer copy the !DAZ folder to all of them, or ask you if you want it done. I mean, since P5 can read any runtime, while P4 can only use its own, it seems logical to install stuff to the P4 runtime, if you're using both programs. I imagine a lot of people do it that way. Then wonder why it takes so long to inject the morphs.