I have a model that was started in 2012 and upgraded to 2013. Since being upgraded, the walls and slabs show as transparent (this wasn't the case in 2012). I've double-checked to make sure the link is set to COORDINATION and that the walls/floors are being overridden with different display options. I've also just updated the video driver. Plots/PDFs are also showing the walls as transparent. Any thoughts on how to make this work again?
Matt