pjz99 - i think you're not understanding at all what i'm saying (though i appreciate you trying).  work from the assumption that i know what i'm talking about and that what i'm pointing out isn't obvious. 

first of all, i can see how the system works (you don't have to keep restating the obvious), but the base V4 install, which was updated and said to be required to install S4 (that is installed first) does not have any evidence of any file, line, or piece of code that connects it to S4 or any other add-ons.  looking at the files it installs on its own, there should be absolutely no reason for the V4 base update whatsoever.  not no reason in general, like changing JCM, but no reason for the S4 install to need it.  based on everything i've observed, and that obviously you've observed too, the S4 install should work without the V4 update.  that people are unable to get S4 to work without the V4 base update is a concern to me, because it means something outside of what  you've talked about and keep focusing on is getting changed.  it's not in the readScripts lines, it's not in the files you keep talking about, and it's not in the cr2. edited to add:  this hidden complexity seems to be the source of a lot of problems, and as far as i can tell, completely unnecessary for pure functionality.

second of all, there's no second cr2 that needs injections.  what you're saying makes no sense at all, in fact.  when i have a new cr2 with no readScript, that means no new channels, and no need or ability  to inject new channels at all.  and certainly no ability to make hidden channels automatically.  so injecting the morphs wouldn't work for a new, Poser-saved character. 

but that's not what i did.  i had to rebuild my "loaded" v4,  which means starting from the base cr2  (or actually Morphia's) with all the readScripts.  all the readScript references are relative to the main runtime  (":Runtime...."),  and point at files with other relative pointers.  they should only work when they're in the main runtime.  instead i left everything in my version 4 runtime, and they installed anyway.  i did save a new loaded v4 cr2, which has no more readScript calls, but that will not take additional injection morphs and has all its morphs and channels loaded.

so despite the fact that there shouldn't be any context awareness, it behaved as if there is.  though it did have a problem with the Posermatic morphs.  i can't see any difference between them and other morph sets.  also, i have file search on shallow in my preferences.  i would think that would have precluded operating as it did, but maybe it made it look in the active runtime first?  i have no clue.  all i can say is that i got performance conflicting with both what people have posted and what DAZ has explicitly instructed.