I get mine while rendering.Usually when I`m trying to render displacement maps & hair. Sent bug report. There is SR2 coming out sometime during the week. So CL told me when I contacted them about the huge downloads & no resume. Thats sorted now & SR1 now fully download & installed. But still get C exception errors. I shall wait for SR2 & see how I go from there. Its a shame that there are so many bugs, unfortunatley its not uncommon because the new features are great.