The error states that you cannot the specific role in the database because it already exists. The error may be occurring because of mistake during the upgrade process. Have you tried to revert back the changes?
If you successfully upgraded your project on your developers machine I would suggest you to move it to your live server / without getting any exceptions / by completing the following steps:
Make all the necessary configurations and mappings in IIS.
Create your database server ( export your db from your project
and have it set up in MS SQL server ).
Create the website folder in IIS and point it to where all your site files are. Also you need to make some changes in the web.config
to match your current configuration.
Do not forget to download your license file from your account ( from the Sitefinity website ) for your correct version and domain
so you can license your website correctly.
the Telerik team