Resolve error while install/uninstall SQL server Express 2005: Failed to load sqlspars.dll

1. By REGEDIT tool: open HKLM\Software\Microsoft\Microsoft SQL Server\90\Bootstrap

2. View the parameter WYukonBootstrapDir (it seems to be Local Settings\Temp in your profile)

3. Copy there sqlspars.dll from c:\program files\microsoft sql server\90\setup bootstrap to the path that is the value of parameter above

4. Run the SETUP again