Did you delete the "launcher" subfolder? After starting RW, did you wait until the download was completed (it's necessary to download a few hundred mb for the update, this can take some time depending on your internet connection)?
In case of doubt delete the whole "data" folder and run the game again (in case some files were corrupted).
I deleted the lanucher subfolder. After logging in the launcher usually displays a message that it's downloading files, but now there's no message. I deleted the whole data directory, but it doesn't change anything.
MY PLUGINS: Cooking Timer
I'm not very active on these forums so
it may take some time to get a response from me. Sorry.