ÂThank you so much, but...I know that in the case of cutting my roofs into Quadrilateral or convex shapes, the warning probably will be fix. but the problem is about the main cause of this problem. If the non-convex shapes of roof is really not accepted and lead to this warning, why the other non-convex roofs which I modeled ran without any warning. I think may be there is another cause for this problem.Thank you anyway.ÂBestTilakÂ
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