Contour lines only generate 1m intervals since update

Hi 

 

I have been having issues generating contour lines at less than 1m intervals. PIX4d does not accept the 0.25 as an example. I have been trying to find a solution with PIX4d support but they firstly very slow to respond and second keep on giving the same answers. 

 

I’ve tried with 0.20 with the new version and it worked fine. As dxf output