DAZ installers always target Poser.exe, regardless of which version you use.  However, PoserPro and PoserPro 2010 executable is PoserPro.exe which confuses the heck out of the DAZ installers.  The dummy trick works.  Period.  Dave-So's post illustrates the options I always get when I install my DAZ content.  I have P7, P8, PoserPro and PoserPro 2010 on one machine and every time the same option.  The setup also remembers which runtime you installed to last. 

And BTW, my V4 and M4 base are installed in P7's runtime, fully accessible to my other version as an external. 

@Dave-So: I understand your frustration and your little tirate was somewhat over the top, but to the point.  I almost illicited the same response.  The main issue here is the lack of informative communication to present a detailed explanation about a particular problem so others may formulate an adequate response without resorting to random solutions.  Simply, the OP neglected to mention which operating system exists on the computer and what Poser version is installed, and used the wrong terminologies to describe the problem.  We can reduce the number of back-&-forth questions if the base query provides as much information as possible.