Cinema 4d Multi-Pass Depth render problem

I rendered a multi pass of a scene in cinema 4d, and I have the Depth pass and the main scene in the render picture viewer. They both play fine and the main scene exported just fine. When i go to save out the depth pass, i saved it as a quicktime movie, and it exports random frames as the depth map but most of it is still the main scene and it flashes back and forth between the two,(Seemingly at random). Is there a solution? Its probably just a setting i need to change.

Any help would be appreciated.

Thanks