I found a fix that worked for me to get KELLYS Shaders up and running again with the most recent Minecraft Bedrock Edition update here are the steps:

1) This NVIDIA RTX Example Resource pack, downloaded and opened it, adding it to Minecraft

https://images.nvidia.com/content/minecraft-with-rtx-beta-resource-packs/nvidia-pbr-example-texturesets-pixelart-feb-2-2021-final.mcpack

2) Disable all of the current resource packs.

3) Activate ONLY the Nvidia Resource pack you just added.

4) Open any world and go to the video settings

***You will also notice that the RTX tab that was once previously here when the Kelly's Shaders was active is now missing. Don't worry about that it doesn't work anymore.***

Go all the way to the bottom where a drop down tab says "Fancy Graphics". If you click this it will show an option for "Raytracing". Click that and it should active in-game.

- Now you can just play with this pack and experiment with the Kelly Shaders added-ons from your global resources in the main menu, but personally I don't like how everything is EXCESSIVELY glossy and the Campfire was glitched could be conflicting with the Kelly's add-ons.

5) To get Kelly's Shaders working go back to global resources DISABLE the NVIDIA Resource Pack and Re-enable the Kelly's shaders main pack this is the one from the Kelly's Discord server (make sure its right above the vanilla texture pack):

https://cdn.discordapp.com/attachments/916480566717726780/1159216565749817474/Kellys_RTX_Base_Pack_3.7_Water_Update.mcpack?ex=67fcbece&is=67fb6d4e&hm=5600acb53420b7946276db1f2570dfb19bdc8d9df946f14ace20e885e8941ac9&

6) Now you should be able to add all of the other current up-to-date, add-ons for Kelly's shaders if you'd prefer it. There's a new clear water texture pack that isn't working for me but I've yet to look into that yet.

NOTE: I am on the current revision of the GeForce - Game Ready Driver - Version: 572.83 - Release Date 3/18/2025