My Client does not open anymore as it is missing a .dll file. The setup.exe is not capable to make a reparation and just terminates the process upon discovering my already installed Galaxy.

I could now uninstall and reinstall Galaxy, but I fear losing some settings. I know from another thread, that at least tags and custom pictures are stored in a cloud. What about the rest, especially custom titles, dates and sortnames ?

Edit: After a good year since I asked this I reinstalled Galaxy several times and everything stays regarding games: custom pictures, tags, titles, sorting, manually added games.
Only settings for Galaxy itself are reset.

NB: Reinstallation happened on the same PC.