Hello, when I try to render using a mantra ROP by clicking the button render, it just stays at frame 1 and the bottom help reads a progress of 3%. The cpu activity displayed in Windows Task Manager is quite low. But, when I render a frame in the render window, it does render something and cpu activity goes on full load. I also tried creating a new Mantra ROP node without changing any of the default parameters except the frame range.

I'm using Houdini Apprentice. The free one.

Thanks for the help

Edit: I rendered a simple scene with two geometry and it rendered sequences fine. The scene that I'm having trouble with involves delayed load shader and similar to Millions of Particles tutorial by PQ_Houdini.