The thread was moved from "Installation and Configuration in Mac OS" by Xenos Ever since upgrading to Parallels 3.0 5160 I have lost the ability to play video files in Windows Media Player. I get an error message saying the codec may be incompatible, but I am trying this on a sample .wmv that comes with Vista. Everything worked properly before the upgrade. I installed VLN, and I get audio to play, but no video. I do not have the Direct X option checked off in the configuration file.