Hello everybody.
As some of you may know, I was working on some Halo themed content a few months ago and I recently picked my projects back up.
As I progressed through my new meshes, everything was going smoothly until it quite literally was not.

After looking around on the internet and various forums, I figured the body mesh had to have an incorrect number of bones for the group, but my other meshes for the same collection are also having problems. This occurs even when not used in conjunction to the body mesh.
Any help is greatly appreciated, and if you happen to know of any good tutorials on separating a mesh into different groups (and importing the new groups into a package!), I ask that you please direct me to them.
Thank you much!

Could be incorrect bone assignments, could be too many bones in one mesh. (I think the maximum bones per mesh is 60 but that's off the top of my head.) Vertices dropping to the floor typically means missing bone assignments. If you upload your package I'll take a look.

Thanks much, I actually read about assigning bones to a newly created portion of a mesh. I think I can figure it out from here (especially since I'm scrapping and starting over again), but thanks for your response.