Quote - app = Facegen. ...

Ah, I think I see the problem now.

First of all, you have to have the Customizer in order to use FG with other models.  Creating the new base mesh for morphing can take around 10+ hours, depending on your machine, as it cranks out the numbers.

Customizer will require you to match, as closely as possible, the selected figure's head with the stock "meanface" object.  In order to do that accurately, you really need to use a 3D model app an not Poser's face morphs.  You can move the stock object around any way you wish but, as with everything else regarding morphs, you can not translate your own model that you will be converting.

What this process does is take an object the sofware "knows" and then tells it that a new object matches key points on the other one in such&such a way.  Then, the software will create a new object to work with and recognize how to translate the work that it generates to a new set of vertices.

It's most likely that the problem lies in how you first either exported the head you wanted to use (V4/whatever) or a problem that arose when you were trying to match up your head with the programs base mesh "meanface" object.  Unfortunately, there isn't any easy way to test different methods because it takes so long for the conversion process.  I haven't looked at that program in ages but, unless they have made some sort of significant changes, that's where your problem lies. 

NOTE - I remember reading somewhere that people had scaling problems no matter what they did.  I don't mean "exploded model" problems. I mean scale problems with they exported their new morphed mesh. ie- gigantic meshes  You may want to take a look for that in a keyword search.  There IS a thread here or on DAZ regarding Facegen that has good tips.  I never felt like investing the cash in something that didn't have some sort of better support for Poser-specific applications since that is the only use I would have for it.  I read too many questions on various boards with no good answers/tutes/discussion about solutions.  Most likely, most problems involve the Customizer and how it is being used (Operator Error) converting a new base mesh (V4/etc) into something FG can use to make morphs.

You can try the newest version of FaceShop Pro.. but, from everything I have seen, it produces less than stellar results unless you spend an inordinate amount of time perfecting your FaceShop leet skills.  The best method is just going to be using a 3d modeling package and doing it by hand until either Facegen incorporates a Poser-Friendly inclusion (It would be extremely easy for them to do) or FaceShop begins to get more accurate results with not as many weird errors.

If you have gone through the Customizer process and are still getting these weird results, then... You may have to redo it.  Them's the breaks, sorry.

If you haven't gone through the Customizer process ( a separate software package, pricey in itself) then... well... there's your problem.  Time to cough up some more money.

PS - I've been working on making 3d "likeness" morphs in Hex and, it's really not as difficult as I thought it would be.  Granted, I've only been goofing around with that idea for a week or so but, I can see how easy it would be once you got some experience doing it.  The most difficult problem is expression morphs and having them flow well with your new face morp[h.  That takes some planning on how you're going to position the verts.  I don't see how Customizer would be able to do that and it would have to export its own expression morphs.  (Does it do this?)