pithydoug wrote:
I would have thought that NLP or any App that uses LR/PS would/should have participated in a beta test to avoid such a problem.
See the text of the email below. (from Nate at Negative Lab Pro):
"Hi friends, an important notice for all users of Negative Lab Pro:
Do NOT upgrade to Lightroom Classic v13.0 just yet…"Why shouldn't I upgrade to LrC v13.0?"
There is a bug with the SDK in LrC v13.0 that prevents Negative Lab Pro (and other development-based plugins) from making changes to tone curves. Until this bug is addressed by Adobe, all versions of Negative Lab Pro will NOT work in LrC v13.0.
"When will this be fixed?"
Adobe is aware of the issue and it has been escalated internally, so fingers crossed that it can be fixed soon. (This sort of thing has happened once before, and Adobe handled it very quickly).
I will send out an update email when I can verify that this has been fixed, and it is safe to update LrC.
"I've already updated to LrC v13.0... what should I do?"
For the time being, you will need to downgrade back to Lightroom Classic v12.5 to continue using Negative Lab Pro:
> Open the Adobe Creative Cloud app
> Make sure “Apps” is selected in the left pane
> Find the “Lightroom Classic” app, and click the “…” on the right side
> Select “Other Versions”, then install v12.5
> If "auto-update" is on, you will want to turn it off so it doesn't reinstall v13.0: Go to "Creative Cloud > Preferences > Apps" and make sure Auto-Update is off.
Other questions? Join the forum discussion on this topic here:
https://forums.negativelabpro.com/t/negative-lab-pro-not-working-after-upgrade-to-lightroom-classic-v13-0/6824/5or reply to this email (please note it may take a few days for me to get back to you via email)
The good news is that once v13 is fixed, it has some features that will be great to use with Negative Lab Pro! Thanks for your understanding and patience.
Cheers,
-Nate"
If you read the forum article, it appears that v13.1 of LrC is expected to bring the fix… in December.