How come my joined objects won't rig with my main object? :(

[Antumbra]

I have a pair of shorts and I made pockets, belt holes, button, etc. and joined it with my pants and then when I try to attach to parent with automatic weights the only thing that has weights on it, is my pants, my pockets and everything else is just there and it ruins everything. Why is this? :( Is it because of the way I joined the objects? Don't you just push ctrl+J and that's it? it all becomes one object? or.... is there another way of doing it? because idk what to do :( 

[Sassy Romano]

Probably better placed in the mesh forum but just to ask, is this an item made in marvelous designer?

 

If it is, when you export, be sure to choose the option to "weld vertices" then it will weight as normal.

 

I'm not sure what the "rules" are for how blender automatic weights works such that it stops at a set of vertices even though other other objects are linked but it does appear to stop at object and disregard unconnected vertices.

 

Welding will merge the adjoining vertices of your parts into a merged set of vertices if that makes sense?

[Medhue Simoni]

When you join meshes together, the last mesh you selected will be the mesh that all the other meshes are joined to. Maybe you didn't select the shorts last. If you are just using automatic weight, then just unparent the mesh and reparent it with autoweights.

[Antumbra]

No it's just made with blender I don't use marvelous designer anymore.

[Sassy Romano]

Sounds like Medhui has a solution then

[Antumbra]

No that still didn't work.... >_< no matter way I join the meshes it still won't work. I try to join the object to the main and still won't work and the main to the object and nope. The object just won't rig!

[Sassy Romano]

In that case, try merging the vertices