Hear, hear...:) Just my experience but not necessary that it would happen to you. As Laurie said, its the "Resuming Render" thingy from the Vue manual. I have experience problem with it before (twice to be exact)and this was with "Noctural Angle" Zygote Calender image at 3300x2250). I have it rendered 1/3 way and apply the "resume render" procedure. when I restarted rendering again, there was this nice thin pixelated colourful line that appeared on the bitmap which was last saved. I thought it was one of those video card 'magical showoff', but no, the bitmap file was sorta 'corrupted'...Vue is funny!