Misaligned and missing assets

hi all,
i was using vray to render and it worked fine - then i closed the file and reopened it later to do some more rendering but ever since then I cant get v-ray to render properly. the render is always misaligned from the viewport, nothing changes when i change the aspect ratio. additionally, the v-ray assets do not show up at all in the renders and some of my own model seems to be missing in the render. additionally, at high rendering output i am still getting poor results. i am unsure what could be causing this since i did not change my model from when i used it prior, except for adding a couple more vray assets into the model, but i have made sure to:

Could you send a file that demonstrates the issue ?
you can delete the entire geometry and textures, just put a single cube and verify it is reproducible.
Thanks