If Camera Motion is enabled then the camera position data:
<camera>
<pos>
isn't written to the .igs file and therefore you will always get only the first frame rendered no matter what frame you are on. Object Motion blur works fine but if Object and Camera are both enabled then again the position data is written.
So my cack handed workaround atm is to save a .igs without Camera Motion enabled and look at that for the camera pos data and copy it. Then save a new .igs with Camera Motion enabled - open this .igs and paste the earlier saved camera pos data.
This also only works if you want to render a single frame. A full animation sequence would be a lot of work using this method
There is probably a much easier way to do this but I'm no programmer - was a miracle I worked this much out!
