Black border in my tiles

[UniPixel]

Hello, this is my first post here but I have heard that support here is awesome : I'm a newbie at Unity, I started working with it recently and purchased today 2D toolkit. I would like to know why black borders appear in my tiles using the TileMap editor. Tiles are from an atlas, but I believe I have setted up the sizes and margins properly so it doesn't make sense to show this black border in all the tiles I draw.

Here is a pic:

Thank you in advance

[unikronsoftware]

Have you done this yet?
http://unikronsoftware.com/2dtoolkit/forum/index.php/topic,294.0.html

[UniPixel]

Thank you! Fixed now .