Hi there
Really sorry to hear that so many months of work may be at risk due to some unlnown issue.
There could be a possible solution that hopefully will resolve your issue.
Even though you donot see the color correction being applied, the sliders and value changes are still "alive" in the Lumetri panel.
You should look at saving the corrections as LUTS.
If you dont now how to create LITS there are a ton of vids available to watch on this.
The trick is now what to do AFTER you have created the LUTS (and stored them safely in a location like an external)
You have several options but I will outline just 3:
1. Reinstall your OS (not the most pleasant of tasks but it will esure stability)
2. Should 1 not be an option uninstall PP using the CC Cleaner tool.
Roll back to the most stable version that you were previously working with (ensure that your current save can be opened with the version you are installing)
3. Open the save .proj file and manually delete all the Lumetri correction you have made from within the Lumetri panel or the Effects panel
4. Save this .proj without the color correction as something like "My Ungraded Project)
5.Close off Premiere and Reopen with the new saved project
6. Apply any LUT and see what happens
Kindly let us know how you fare.
Hope thos works for you
Remeber that you can also move the saved LUTS to other NLE's if this is a client critical project and you stand to lose your income. Again , there are tons of video resources out there if you do not understand how to do this.
A tip for future use. ALWAYS have 2 versions of Premiere installed when Adobe releases a big update. As an example run 15.0 and 16.0 on the same machine. On Macs this is very safe and will not cause any issues. Its a safety net for serious critical work that doesnt cost too much time to manage.
Mo
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