Before updating: Put regedit in run.
open instslldir and change the path-->remove the quotations.
Check the path in vbs file and registry.
Change the path accordingly.

After Updating:
If it shows 404 file directory not found  after updating the patch.
put 'inetmgr' in run
in IIS open the server.
below that you can find 'web service Extension'.
open that by double clicking on it and allow the below mentioned things.
1) ASP .net version 4.
2) ASP .net version 2.
3) active server page.
4) cgi.
5) server side includes.


if error comes in web.config.
remove the data visualization line and the line below.
and also its assemly reference.
totally we need to remove 3 lines(data visualization) from web.config.


http://support.microsoft.com/kb/315122