CRM 2011 - Action Microsoft.Crm.Setup.Server.GrantConfigDBDatabaseAccessAction failed

I got the following error when I was installing CRM 2011 on one of our servers that had CRM 4 installed previously on it:

Action Microsoft.Crm.Setup.Server.GrantConfigDBDatabaseAccessAction failed.

Windows NT user or group 'Domain\SQLAccessGroup {GUID}' not found. Check the name again.

I was able to fix the error by deleting the following logins on the SqlServer being used by CRM:

DomainName\PrivReportingGroup {GUID VALUE}
DomainName\ReportingGroup {GUID VALUE}
DomainName\SQLAccessGroup {GUID VALUE}