Little troubles after a Domain name swap

[RBLT]

Hi!
I had some troubles since this afternoon. I changed my domain nam for a new. I kept the old domaine name, and installed a new. The server is still the same. So now, i have the same website, with 2 domaine name: the old, and the new. In WP admin and MySQL, i changed all references to the new from the old. But i still have troubles. The Old look great, but on the new, all link go to the old DNS and don't work.
I don't know if it's a Lay Theme problem or something else, like WP specifications, but if i change the theme, all work fine.
I tried to create a new project (test, the lama on top-left corner :D). And now, it's work on the new and not on the old.
Do i forget to change a param somewhere? Hope you'll understand my trouble despite my crappy english :p
By the way, thanks for your work, it's awesome!

[arminunruh]

Nice site!
I think you got some things mixed up a little cause neither of the 2 sites really work :/

You have 2 domains: "themobiusstrip.fr" and "rblt.fr".

themobiusstrip.fr is the old domain, so let's assume your website works when ppl go on that domain. (Which it doesn't right now)
You can configure the domain "rblt.fr" so that it redirects to "themobiusstrip.fr". Which means in the browser address bar you will then see "themobiusstrip.fr".

OR

You use a plugin like "Wp Migrate DB" to change your database so all "themobiusstrip.fr" addresses become "rblt.fr" addresses. Then you configure your domain "themobiusstrip.fr" to always redirect to "rblt.fr" so that only the domain name "rblt.fr" will be visible on the browser address bar.