Unable to Log in to JIRA due to Group already exists in the Remote Directory
LDAP/Active Directory users are unable to log into JIRA.
2012-05-30 16:25:32,888 http-60501-4 WARN admin 985x1363x1 7s2b7h 172.20.7.137 /plugins/servlet/embedded-crowd/configure/ldap/ [crowd.embedded.admin.ConfigurationController] Failed to create group 'jira-users' for auto-add groups of 'AD 2003' com.atlassian.crowd.exception.OperationFailedException: Group already exists in the Remote Directory ... Caused by: com.atlassian.crowd.exception.InvalidGroupException: Group already exists in the Remote Directory
One potential cause is that the initial synchronisation has not yet completely successfully.
Check your whether or not synchronisation has completely successfully, as in Synchronising Data from External Directories.