Disallowed movement

[xoft]

First of all you should make the box large, say 50 x 50 x 50 blocks, so that you can actually debug it, see if it works. Only then, after verifying that it works, you should twiddle the coords.
And yes, the cBoundingBox expects the coords to be sorted, the first vector's coords should each be less than the second vector's one.