=== Closed ===

Andi, is your issue resolved? How did you restore the config.php and the info inside it?

Oh well I created a complete new installation in a subfolder with an other database. Just the issue with with the Salt was still there. So i had to write a Massmail to everyone, to get a new password... Kinda disappointing :D

If you hadn't backup of your website this was the only solution. 

Anyway, I thought without the salt everything (forum posts etc.) is encrypted with it :D But it wasn't it's not that bad because just started the community.

Great you worked things out. Thanks for letting us know