Hey there @Vega2k
Are the presets gone or are they greyed ??
--> If they appear greyed inside the presets browser, try to set back the search tags to "ALL"
Have you tried to update or re-installed ANA 2 before this issue happens ?
Or have you manually rename any presets folders ?
I'm assuming you're on Windows, so yo need to make sure that you run the correct installer matching your OS version ( depending if you're on a 32bit or 64bit environment ), just run the corresponding installer, not both.
Before trying to re-install, you could try the following as well ( with your DAW close ) :
Browse to this location C:/Users/YourUser_Name/AppData/Roaming/Sonic Academy/ANA 2_ ( AppData is an hidden folder by default, just Google how to reveal hidden folders on Windows if you can't see it )
--> Once in this directory, you should see a ANA2.settings file, delete it then start your DAW, launch a new instance of ANA 2 and see if it changed anything.
If it doesn't work then uninstalling/reinstalling ANA 2 should fix the problem, make sure to download the latest version from your S.A user account.
You'll find an uninstaller at this location : C:ProgramData/Sonic Academy/ANA 2 it should be named Uninstall ANA 2 64Bit.exe ( for the 64bit version ), run the uninstaller and then perform a new install making sure you're only running the correct installer as mentioned above. ( Take note that ProgramData is also an hidden directory on Windows by default, you'll need to reveal it if you can't see it ).