New SMB shared folder cannot be created. The object already exists.

Hi Tried to create a new shared folder on a drive and got the message " New SMB shared folder cannot be created. The object already exists." This is a Windows 2008 Cluster.  log has this entry:
[RCM] rcm::RcmApi::CreateResource: ERROR_OBJECT_ALREADY_EXISTS(5010)' because of 'Resource already exists.'
[API] s_ApiCreateResource: ERROR_OBJECT_ALREADY_EXISTS(5010)' because of 'g_rcm->rcmApi->CreateResource( pGroup, name, lpszResourceType, dwFlags )'

any help is much appreciated.