I used this .htaccess file on my localhost:
RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule .* index.php/$0 [PT,L]
But when I uploaded my site to the ftp, it suddenly doesn't work. I set the base_url. Mod rewrite is enabled. What else can be the problem. My knowledge is very limited, I was already happy, that I programming part, but this server stuff is over my head. But I'm willing to learn it, so if you recommend a place to start, I'm open to that.
So right now only a formatted page comes in, with basic css settings and the 404 message. It's weird, that this message can be created in a form like that, so it means it's not a technical problem, but a settings problem. I googled around, tried more .htaccess files, but nothing works. Thanks for your help!