Rigging issue - With video, little text, READ :)

[MrBigzy]

In order to scale it down properly, you have to unbind the mesh and scale the bones and mesh down, and then rebind. Either that or you have to reset the bindpose after scaling down. It doesn't work when scaling it down by itself because the original position of the model when it is bound is how the model editor interprets its size.

As for the rotation, well, max is Z up, and HPL2 is Y up. So you'll just need to rotate your model 90 degrees onto the +Z axis (also after unbinding or changing the bindpose).