I've imported a file and it seems corrupted, it in not due to Blender. But I wonder if this "corrupted" mesh is still usable or not? Originally, it was a haircut.
When I switch to edit mode, nothing is shown and I cant use "make edge/face". It says "more vertices are needed".
here is the file: http://www.mediafire.com/download/5sk6acagdbu7ea0/untitled.zip
EDIT: inIn fact, the problem can't be solved in Blender itself, as the tool used to import/export the .m2 file will mess up the result in-game, even if it looks ok in Blender... :(