Minor bug with the new animated irrmap feature in v1.5:
If you are set to render with a pre-existing irrmap sequence, and you cancel the rendering before the irrmap is loaded (eg. during a lightcache step) then VRay will still load the irrmaps before canceling the render.
If you are set to render with a pre-existing irrmap sequence, and you cancel the rendering before the irrmap is loaded (eg. during a lightcache step) then VRay will still load the irrmaps before canceling the render.