Lightroom Presets not importing - Lightroom Classic V11.5

[josieb21231145]

When importing my presets it only shows 3 of 18 and no matter what I do I can't seem to get my presets working. It always says 'Unable to import presets. All items were already imported.'

I've tried 

-Resetting Preferences

-Selecting 'Show partially compatible develop presets'

-Show lightroom develope presets>settings>adding presets there

-Deleting all - re-importing them

-Changing the code in the presets

-Uninstalling and removing preferences and reinstalling Lightroom

-Using V11.4.1

They worked fine before v12 came out and they work on my laptop on both v11.5 & v12. They just do not work on my imac. I cannot find a solution. Please help

[JohanElzenga]

What kind of presets are these? Do they apply a custom profile? If they do apply a custom profile, and that custom profile is not installed yet, then the presets will not show.

[josieb21231145]

I'm not too sure, how would I find this information? They used to work on my computer and they still work on my laptop. 

[josieb21231145]

I also tried File>Import Develop Profiles and Presets

And I don't see anything in the Profile area that would connect to this. 

[JohanElzenga]

What kind of presets are they? Where did you get them from?

[josieb21231145]

G-Presets purchased probably in 2021 with zero issues and fully working until now

[JohanElzenga]

In that case I would contact the supplier. It's his product so he should be able to deal with this better than we can.