enai I removed your post with user credentials, we really don't want you to have someone hacking your site. I suggest you change your user password on the user you provided.
Also, please continue to write in English as I first advised you. This is the second time I have asked this.
If you're encountering errors when attempting to install Beta 7, we cannot assist you. That version is no longer supported.
If you're encountering errors when attempting to install Beta 8, we need more information. When did you receive the error and what were you doing? What have you accomplished so far?