render cache does'nt work with timeline 1080 * 1350

Hi the render cache doesn't work with timeline of resolution 1080 * 1350. I use a timeline in another timeline.
it render a little part becoming blue, and come back red again, go on the left blue and become red again,
It is with dnxhd lb and if you try with gopro cineform 10 it crash the application immediatly.
it render a little part becoming blue, and come back red again, go on the left blue and become red again,
It is with dnxhd lb and if you try with gopro cineform 10 it crash the application immediatly.