Skeleton will not bind to Mesh

[Anonymous]

Hi!

So I am having issues with trying to bind the skin to a character that I am working on. Now the Model was done in Maya2018 and I am rigging ion 2015. I have a feeling that may be the main reason for my issue. However, I rigged the character up and tried to do a smooth bind on it. Once I try to apply the bind on it I get this message.....

"Geometry "CombinedShapeOrig" contains non-manifold vertices or edges. Use Mesh > Cleanup to locate and remove mesh irregularities.

Clicking Continue binds the mesh using a slower, more permissive solver, and weighting results may vary"

I immediately try to solve the problem by trying to clean up the mesh. The only issue is that when I do I can't find a a problem when I do the Mesh Cleanup. 

NOTE: I was able to Bind it in Maya 2018. Would rather work in 2015.

[Anonymous]

Sounds like trying to rig a model in a different, and older, version of modeling software is the problem.  Rigging the thing in the software you modeled it in (that may mean starting the rig over) should solve the problem.

If you don't mind me asking, why'd you choose to model in one version and rig in another?