I started the install directly on my (2003) Exchange server - which already had an instance MS SQL Server 2005 Express (SP3) on it for the backup software. The install failed due to an error with SQL. The exact error message was:
SQL Server 2005 Express SP3 installation has failed. Please check the install log for more information.
Setup will now exit.
I was able to find a log file @ \Program Files\Microsoft SQL Server\90\Setup Bootstrap\LOG\Summary.txt
Inside the log file it stated:
Error String : An installation package for the product Microsoft SQL Server 2005 Tools Express Edition cannot be found. Try the installation again using a valid copy of the installation package 'sqlrun_tools.msi'.
Thoughts?