I am having difficulty getting into photoshop from light room and photoshop back to light room.
from LR message says I need to update to camera raw 9.8
and from PS to LR says : "can;t read - need to maximize capacity ?"
Thank you Angie Crompton
The compatibility message about ACR version is a bug. You can ignore it. Just click "don't show again", "open anyway" and it won't come back. Everything will work normally.
The other message means you need to check "maximize compatibility" in Photoshop preferences. This embeds a flattened composite layer in the file, and Lightroom needs that to read the file. Lightroom can't work with layers.