Beta versions can leave items in the registry that don't show up add/remove. I would goggle this error to see if you can find a pointer to a site that shows you what to look for that might be causing the problem.
>I am trying to install SQL Server 2005 Express on my laptop. There are no references to SQL Server listed in Add/Remove Programs, yet I am getting this error:
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>"SQL Server 2005 Setup has detected incompatible components from beta versions of Visual Studio, .NET Framework, or SQL Server 2005. Use Add or Remove Programs to remove these components, and then run SQL Server 2005 Setup again. For detailed instructions on uninstalling SQL Server 2005, see the SQL Server 2005 Readme."
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>I don't have SQL or VS installed on the laptop.
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>Anyone know what's going on?
(On an infant's shirt): Already smarter than Bush