Steps:
* Copy the contents of the RC iso to a folder.This can be done by
mounting the ISO using Poweriso or IsoBuster.If its not a ISO then its
much simpler.
* Now open Source directory within Windows 7 Copied files & folder.
* Open the file cversion.ini in Notepad.
* Replace miniclient value from 7100 to any lower build for e.g 7100 to
7000 as shown in pic below.
* Now Save the file cversion.ini and your done.
* Run Setup again and upgrade.
* Same steps hold good when upgrading from RC to RTM build which is
rumoured to be out September 09.