I bought some presets but I cannot modify them

[szjudith]

my presets are working, I mean they can be found in the develop module, and I can apply them to my photos, but I am not able to modifí them in any way! What should I do? Thanks

[Rob_Cullen]

What do you want to "modify"? the sliders in the Develop panels after applying a Preset, or the settings contained in the Preset ?

To modify a 'User' Preset settings, I would (after the image [Reset] ), apply the Preset, alter the sliders, [Right-Click] the Preset and [Update with Current Settings], or- create a new preset from the current Develop settings.

The Adobe default Presets cannot be modified- you can only create a new preset after applying.

Possibly, Purchased Preset files may be 'Read Only' and cannot be changed by Lr.