i´ve imported my presets to LrC. When i open up the section "presets" a big grey area is shown but no presets to select. When I am on the grey area an scroll up or downwards i can see the picture change to the presets. It is like they are hidden behind a curtain.
I´ve installed the newest driver of my graphic card. Radeon RX560. I´ve also done a lot of attempts in LrC settings. Nothing helps.
This may help. I had a similar problem and eventually found someone had written about this in the Community - I can't remember where. Basically, they suggested that the problem is caused by a corupted preset. The solution was to turn off all presets using Manage Presets (sub-menu pops up by selecting the + on the right of the Preset bar) and then turn each one on in turn untill you find the preset causing the preset window to grey out. I did this and evetually found the preset causing the problem and I leave it turned off. This was after re-installing LRC, video drivers, running Chkdsk etc. Nothing worked except isolating the corupt preset. I dont know why it was corrupt but it did work in PS but not in LRC.