Sitefinity Error

I have created one new project using Sitefinity Project Manager.
Now when i browse that project
1)it ask for the Setting Database.
2) In that  I have given the Sql Server 2005/2008 and I have also given the  Database  Name
3) After that I have given the Server name and i have not checked that windows    Authetication      becasue i am using the Sql  Server authentication.
4) NOw when I click on the continue button it ask me for the Administrator Details i have also given that details
5) Now when i click on the next button it gives me error that...
   

The specified role "Administrators" already exists.

[ProviderException: The specified role "Administrators" already exists.]
   Telerik.Sitefinity.Security.Data.OpenAccessRoleProvider.CreateRole(Guid id, String roleName) +447
   Telerik.Sitefinity.Web.UI.Backend.AdministratorPane.EnsureRole(RoleDataProvider roles, RoleInfo role) +429
   Telerik.Sitefinity.Web.UI.Backend.AdministratorPane.DoWork() +95
   Telerik.Sitefinity.Web.UI.Backend.StartupWizard.wizard_FinishButtonClick(Object sender, InternalWizardNavigationEventArgs e) +146
   Telerik.Sitefinity.Web.UI.Backend.InternalWizard.OnFinishButtonClick(InternalWizardNavigationEventArgs e) +96
   Telerik.Sitefinity.Web.UI.Backend.InternalWizard.OnBubbleEvent(Object source, EventArgs e) +540
   System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) +37
   System.Web.UI.WebControls.LinkButton.OnCommand(CommandEventArgs e) +107
   System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String eventArgument) +161
   System.Web.UI.WebControls.LinkButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +9
   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +174
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +4645

Dhaval,
It sounds to me like you are giving it a Database which is not empty. In other words a Database that has already been configured. If you create a new project, then this is what I do:
1 - Go to your SQL Server, and create an empty database. Just right click -> New Database... -> Then give it a name.
2 - Now when you create a new project, give it the name of your new database.
Then the Project Manager detects that it is an empty database and creates the first Admin.

When you create a new project, the configuration files say that there is no Admin specified yet, but when the Project Manager tries to create one, it finds that there one exists already. And that is how it gets confused. I had it happening to me.

Hope it helps,
Andrei

Andrei
yes that's true...
I am giving the Database because it ask me to give..
I have created the site in the older version and i want to convert that to the newer version.
And i want to change the version of the project to 3.7 to 5
so i have already created the database for that project now i want to convert my site to the older version to the new version. so i have directly given that database.
 Is it Work?
If not Then what colud be the proper steps to make it work.
thanks for the reply...

Sorry, didn't realise you were upgrading a 3.7 site to 5.0. In all honesty, I have never had to upgrade sites from 3.7, so I cannot advise you on that. If you have a license, then get in touch with Telerik via the support channel.
Sorry,
Andrei

Andrei
Its Ok. No problem.
Thanks