Maya: mesh has unconneted vertices - It's driving me crazy:(

hunyoung04

hello I modeled a character with max, and imported it to maya by obj file.
I have cut the edges before unwrapping, and then tried to unfold.
But, maya comes with an error that says "mesh has unconnected vertices" and I cant figure out what I should do.
pleeeeaaase help me with it..

Alex_J

check out mesh cleanup tool.

also with object mode selection, merge vertices with .01 value.