SQL Cluster 2008 R2 Cluster installation failed

I recieved the following error when i try to install the SQL Server R2 enterprise cluster installation.

: Installation of SQL server 2008 cluster fails on windows 2008.(The group or resource is not in the correct state to perform the requested operation. (Exception from HRESULT: 0x8007139F)

Please let me know about the solutions.

I assume you have already gone through this blog?