Question : Reinstall CAS Windows SBS 2008 - can't find EXCHSRV80 folder

Hi there,
Outlook web access etc stopped working on a clients SBS 2008 server. We spent some time looking into before deciding to follow a microsoft paper on resintalling. http://support.microsoft.com/default.aspx?kbid=320202
We have managed to uninstall the Client Access Applications, however, we can't reinstall them as we get an error of:
"Specified Directory C:\Program Files\Windows Small Business Server\BIN\CMPNENTS\EXCHSRV80 Does not exist.

The folder doesn't exist, and it doesn't exist on the SBS 2008 CDs. There is an Exchange12 folder on DVD 2 but that doesn't work.

Has anyone seen this before, or have any ideas on how to reinstall this? I saw another post about this on Experts Exchange however the solution they used was to reinstall the server, this is not an option for me.

Answer : Reinstall CAS Windows SBS 2008 - can't find EXCHSRV80 folder

This link gives a fix for somebody who had trouble reinstalling the client access role and the simple fix that was given fixed it.

Give it a go;

http://msmvps.com/blogs/thenakedmvp/archive/2009/06/08/error-with-exchangeserver-msi-file-when-adding-feature-to-exchange-2007-on-sbs2008.aspx