https://forums.autodesk.com/t5/fusion-design-validate-document/red-thumbnails/m-p/5909293#M283992 <P>If i often tell, the red thumbnail only appears to me in "Gray Room" environment. And often i saw, the whole environment dome is red too if you zoom out.&nbsp;</P> Mon, 16 Nov 2015 07:25:41 GMT macmanpb 2015-11-16T07:25:41Z