Thanks for your answer!
Unfortunately, I also tried installing the newest version without success.
I can't deactivate the GPU accerleration because I can't access the settings.
I also tried this:
Manually disable the graphics processor
If you can't launch Lightroom, or Lightroom crashes before you can clear the Use Graphics Processor check box, here's how to manually disable this preference:
- Navigate to %appdata%\Adobe\Lightroom\Preferences\Lightroom 6 Preferences.agprefs.
- Open the file Lightroom 6 Preferences.agprefs in TextEdit.
- Change the line useAutoBahn = true to this line: useAutoBahn = false
- Save and close the file Lightroom 6 Preferences.agprefs.
- Launch Lightroom again.
I opened the agprefs file in Notepad and Wordpad but it is empty.
I hope you can help me further.
You probably opened the wrong file from the wrong path like: C:\Program Files\Adobe\Adobe Lightroom\Resources\Installer\Preferences\Lightroom 6 Preferences.agprefs
Look at this location: %appdata%\Adobe\Lightroom\Preferences\
i.e.: C:\Users\username\AppData\Roaming\Adobe\Lightroom\Preferences\Lightroom 6 Preferences.agprefs
Sadly the Preferences folder in %appdata%\Adobe\Lightroom\Preferences\ is empty. I enabled "show hidden files and folders" in control panel, no positive result
I'd say this means your installation is corrupt.
Remove LR, reboot and reinstall again.
Adobe went in remote connection in my PC and they made it work! They installed updates and renamed certain folders/files.
Thank you for your help