Problem when reinstall CA

Hi

I did experiens that OWA stopped work and Outlook anywere have also stopped work, I did get suggestion that I reinstall the CA and when I try to do that I got following error...

Could someone help me to understand the problem and help me to solve it?

04-20-2013 22:19:16.0176] [1] [ERROR] The following error was generated when "$error.Clear();
  Update-OwaVirtualDirectory -DomainController $RoleDomainController;
  get-OwaVirtualDirectory -server $RoleFqdnOrName -DomainController $RoleDomainController | where {$_.OwaVersion -eq "Exchange2010"} | set-OwaVirtualDirectory -WindowsAuthentication $true;
    " was run: "An IIS directory entry couldn't be created. The error message is Unspecified error
. HResult = -2147467259".
[04-20-2013 22:19:16.0176] [1] [ERROR] An IIS directory entry couldn't be created. The error message is Unspecified error
. HResult = -2147467259
[04-20-2013 22:19:16.0176] [1] [ERROR] Unspecified error
[04-20-2013 22:19:16.0176] [1] 1.  ErrorRecord: A failure occurred while trying to retrieve metabase properties.
[04-20-2013 22:19:16.0176] [1] 1.  ErrorRecord: Microsoft.Exchange.Data.Common.LocalizedException: A failure occurred while trying to retrieve metabase properties.
[04-20-2013 22:19:16.0176] [1] [ERROR] The following error was generated when "$error.Clear();
  Update-OwaVirtualDirectory -DomainController $RoleDomainController;
  get-OwaVirtualDirectory -server $RoleFqdnOrName -DomainController $RoleDomainController | where {$_.OwaVersion -eq "Exchange2010"} | set-OwaVirtualDirectory -WindowsAuthentication $true;
    " was run: "A failure occurred while trying to retrieve metabase properties.".
[04-20-2013 22:19:16.0176] [1] [ERROR] A failure occurred while trying to retrieve metabase properties.
[04-20-2013 22:19:16.0176] [1] [ERROR-REFERENCE] Id=ClientAccessOwaComponent___62bd834915a7470798aa47ba1f2b6800 Component=EXCHANGE14:\Current\Release\Shared\Datacenter\Setup
[04-20-2013 22:19:16.0176] [1] Setup is stopping now because of one or more critical errors.
[04-20-2013 22:19:16.0176] [1] Finished executing component tasks.
[04-20-2013 22:19:16.0348] [1] Ending processing Install-ClientAccessRole