Easier to start fresh on a 2.3 install like you did. Hardest part is setting up the scenery library. Don't forget to put in the new FSUIPC, I always forget that one. And (for now) fix the clouds.fx file as discussed in the other thread. They are going to come up with a hot fix for that, but it is easy for you to do. As I mentioned, at last, my system is stable and smooth. I am really pleased with P3D 2.3. It is nice to get back to flying and away from "tweaking."