3ds Max physique+Biped problem (deforming mesh)

eliris

Hi, I hope this is the right place to ask;

1. I have a model consisting of multiple meshes including are one upper body mesh and a lower body mesh.
2. The mesh has a symmetry modifier and the left side is the main mesh, the right side is the result of the modifier.
   
3. I assigned a biped to the model and added a physique modifier and edited the envelopes to have the same exact values so that things stay the same.
4. When I "lift" the legs up, vertices/edges of the top and bottom meshes "glue" nicely and the mesh stays closed, but when I try with the right leg, the two meshes open up and split)

I have tried messing around with the envelopes and collapsing the symmetry modifiers but it still gives me the same problem.

Here attached is an image explaining the situation.
How should I go on about fixing this?

monster

Do you need to use Physique? It hasn't been updated in over a decade.

Instead of editing envelopes you need to use the Type in Weights dialog to assign the same value to vers at the seams.

http://docs.autodesk.com/3DSMAX/15/ENU/3ds-Max-Help/index.html?url=files/GUID-8EBDF2AC-B318-4CEA-8FF7-EEC6363CCD30.htm,topicNumber=d30e287569

eliris

Well I was following a tutorial and went along with physique but any viable alternatives are okay; I'll check out the manual you provided. Thank you.

monster

If this is a mod for a game follow the tutorial. Otherwise check out the Skin modifier.