Funny, worked great for me…
1. I installed 9c on my XP 32bit laptop.
2. Copied the 9c aviplug.dll (v1.2.0.10486 from Vegas Pro 9.0\FileIO Plug-Ins) to same location in 9d on my XP 32bit editing machine.
3. Rebooted, and all was well again.
Note: My 9d still wasn’t loading properly after trying the previous CTRL+SHIFT refresh tricks.
My last thought is that it might be a legacy Cineform issue. All of my current 1080p clips use the latest Cineform codec.
– Aron
https://www.SonomaFilm.com