Franciele, I got Poser 5 (much cheaper:D) myself in the meantime, and I kept having the same problem; uninstalling and reinstalling didn't work for me. So I did some googling and I found out it is a general problem a bunch of people has with many programs. It is not something specific to Poser or even the magnets. The most convincing explanation I found is that when those programs, for some reason, run a search in the system drives and they don't like what they find, the error pops up. I have no idea what's the actual cause, I am not an expert in computer stuff, but I read about a way around and it worked for me: it seems the problem is often associated with USB drives, so before running Poser try to disable all of them, and the nasty error message should be gone! It saved my day yesterday!

By the way, I am getting there too. I successfully replaced the original mesh with the magnetized one, I just lost all the bone assignments. Fortunately the objx hint came up, I didn't know about that... I have to try that and fix the neck issue, then I should be done!

Next time, hopefully, i'll have a snapshot to show...

I tried already, it's the magnets. They don't load even in an empty scene.
And when I tried with the original Zenman's magnets, they loaded with no problem (except they were in the wrong orientation; the few Bodyshape magnets I could load were in the right place with the figure imported standing up).

I know they should work, that's why it is so frustrating. I put the magnets in the right place, I used body.obj files extracted either with SimPe and Milkshape,making sure I exported only one group, all the settings, as far as I learned from the tutorials and this thread, were ok... And still, I got a weird error message, more or less "exception running message c0000013" followed by a bunch of numbers and letters (sorry, I don't have a screenshot) and the application crashed. The only ones I got to work were a couple of cleavage magnets for the smaller sizes.

Hi guys. Thanks to the precious help from Warlokk and TheMysticalOne I eventually managed to use Milkshape and I spent a couple of weeks moving vertices around.
Now I have the possibility to step up a notch, so I have to bother you again for some more help:smile:
With my great excitement I found out that one of my co-workers owns Poser7 and upon the promise of a couple of free beers he let me try the bodyshape magnets on it last weekend; sadly when I tried to load most of them I got an error message (one of the nasty ones whith the red X) and Poser crashed on me. Only a couple loaded smoothly, I didn't have time to try all of them though.
Now, I will probably be able to play around whith it next weekend as well, bud I  need a fix quick for the problem, since it's not polite to spend the entire night at somebody else's home cursing at his PC... Any idea, anyone?
I am pretty sure I did everything right, since I tried Zenman's magnets as well and they work properly. Help pleeeeeease!!!

Thanks for the help Warlokk, I know that going over and over through this very basic stuff is not fun.
Last night I tried again, but I still get the exact same problem. I followed this tutorial step by step:
http://www.modthesims2.com/showthread.php?t=142305
Basically I took the aftoptuckedwaist outfit in 36DDD size, in SimPE I did that Finder Tab stuff to get to the GMDC, GMND, SHAPE and CRES and exported all of them in a new folder, in which I can then find two files for each one. Then I created a new mesh file, imported the four files into that, saved and fixed integrity. So far so good, but when I come to step 20 of the tutorial and I check my new package with Bodyshop or I open it in Milkshape, what I get is exactly the outfit I picked, with the morphs and all, but in Maxis size instead that in 36DDD. Am I exporting the wrong stuff or what?
Help please...:pray:

Fascinated by all the nice outfits out there that would look great on my sims, I decided to move the first steps in meshing, but soon after the beginning I found a first big problem.
The idea was to take a few tops in bodyshape sizes and make slight modifications, like flattening the bottom edge so that when a top and bottom are combined, say, in a dress, it has a smooth look, without that annoying groove between top and bottom.
Problem is, when I export the mesh using SimPE (conscious of my ingnorance I religiously followed the tutorial on MTS2) the bodyshape top reverts to Maxis size...:scratch:
So the question is: is it possible to do this kind of modifications to bodyshape outfits using only SimPE and Milkshape, or are my modder days over even before starting?