[tex-live] Source/Media clash

[Radhakrishnan CV]

Dear all,

When I tried to update a TeXLive installation in a mac laptop from a
local repository of TeXLive (updated from the svn), I got the
following error:

 tlmgr: package repository /Volumes/Opt/TeXLive/Master
 The release version of the installation source and the installation media
   do not agree: source: 2010, media: 2009
 Please fix your location /Volumes/Opt/TeXLive/Master at
   /usr/local/texlive/2010/bin/universal-darwin/tlmgr line 4222.

Can anybody help me to resolve this?  The TeXLive installation is 2010
as you can see from the above path.

Many thanks in advance for your time and attention.

Best regards
-- 
Radhakrishnan