https://community.graphisoft.com/t5/Modeling/PROBLEM-IN-CREATING-3D-MODELLING/m-p/165830#M89635 Hi Mutiara,<BR /> <BR /> If it isn't telling you the ID to help you narrow the search down, use the marquee tool to enclose half the building, then show only that in 3d. If the error doesn't appear then you know it is somewhere in the other half. Keep repeating this until you have found the object/piece of geometry.<BR /> <BR /> It might be a door or window that is causing the error, so if you have several that are identical in the project, you could try temporarily deleting them all and see if the error stops.<BR /> <BR /> Good luck! Thu, 01 Jul 2010 18:38:13 GMT Anonymous 2010-07-01T18:38:13Z https://community.graphisoft.com/t5/Modeling/PROBLEM-IN-CREATING-3D-MODELLING/m-p/165829#M89634 <DIV class="actalk-migrated-content"><R>Hi there,<BR /> <BR /> Could anyone can advice the following error, and how to fix it? <IMG src="https://community.graphisoft.com/legacyfs/online/emojis/icon_sad.gif" style="display : inline;" /> <BR /> <BR /> Opposite edge list direction in pgon 80.<BR /> Opposite edge list direction in pgon 4.<BR /> Opposite edge list direction in pgon 114.<BR /> Opposite edge list direction in pgon 282.<BR /> Opposite edge list direction in pgon 80.<BR /> Opposite edge list direction in pgon 4.<BR /> Opposite edge list direction in pgon 80.<BR /> Opposite edge list direction in pgon 80.<BR /> <BR /> They keepon prompting while creating of 3D is in progress.<BR /> <BR /> Thanks.</R></DIV> Thu, 01 Jul 2010 06:19:05 GMT https://community.graphisoft.com/t5/Modeling/PROBLEM-IN-CREATING-3D-MODELLING/m-p/165829#M89634 Anonymous 2010-07-01T06:19:05Z https://community.graphisoft.com/t5/Modeling/PROBLEM-IN-CREATING-3D-MODELLING/m-p/165830#M89635 Hi Mutiara,<BR /> <BR /> If it isn't telling you the ID to help you narrow the search down, use the marquee tool to enclose half the building, then show only that in 3d. If the error doesn't appear then you know it is somewhere in the other half. Keep repeating this until you have found the object/piece of geometry.<BR /> <BR /> It might be a door or window that is causing the error, so if you have several that are identical in the project, you could try temporarily deleting them all and see if the error stops.<BR /> <BR /> Good luck! Thu, 01 Jul 2010 18:38:13 GMT https://community.graphisoft.com/t5/Modeling/PROBLEM-IN-CREATING-3D-MODELLING/m-p/165830#M89635 Anonymous 2010-07-01T18:38:13Z