Problem with Platformer & Solid behaviors

Hello guys,

I'm having problems with a box that can be moved but also acts as a solid objects (platformers can stand on top of it)

dl.dropbox.com/u/54411318/weird/index.html

dl.dropbox.com/u/54411318/weird.capx

The boxes on the corners are different than the rest, they should stack up like the others, but instead they are pushing the boxes on the base.

How can I get the desired behavior?

Thanks !

I would suggest drag and drop behavior, in combination with solid behavior. See my game, Build-a-Ramp... It may have what you are looking for, and all that the boxes in that game have are the traits described above!