M4 is like V4 in that it has some defects in Poser 5 . You are probably getting all the messages because of the version numbers in all the morph inj that are loading .   

Once the thing is loaded you can save it back to the library, and you wont get any further messages .
"Michael 4 requires Poser 6 or higher. The figure is not fully functional in Poser 5 or lower."    from Daz M4 base product information. Not recommended in Carrara 6 either :(