https://community.graphisoft.com/t5/Installation-update/Unexplained-Problems/m-p/294821#M30343 <DIV class="actalk-migrated-content"><T>Relatively new to Archicad, and working in V21. But not a total beginner. For no reason that I can think off my model has started behaving really weirdly, and I can't get any work done. First I noticed that doors and windows were "greyed out" in the renovation filter, so couldn't be changed. The i decided to draw the walls again from scratch to see if that would clear the problem, but now my walls don't stay when I draw them. I draw the line but when I click to close the operation the wall just disappears.</T></DIV> Mon, 11 Jun 2018 15:20:28 GMT Anonymous 2018-06-11T15:20:28Z https://community.graphisoft.com/t5/Installation-update/Unexplained-Problems/m-p/294821#M30343 <DIV class="actalk-migrated-content"><T>Relatively new to Archicad, and working in V21. But not a total beginner. For no reason that I can think off my model has started behaving really weirdly, and I can't get any work done. First I noticed that doors and windows were "greyed out" in the renovation filter, so couldn't be changed. The i decided to draw the walls again from scratch to see if that would clear the problem, but now my walls don't stay when I draw them. I draw the line but when I click to close the operation the wall just disappears.</T></DIV> Mon, 11 Jun 2018 15:20:28 GMT https://community.graphisoft.com/t5/Installation-update/Unexplained-Problems/m-p/294821#M30343 Anonymous 2018-06-11T15:20:28Z