Trying to upgrade a named instance of SQL 2000 SP4 to SQL 2005

When I run the installation wizard, I select my instance from the list, and everything looks fine. Then the SQL server setup "UpgradeAdvisor" gives me an error of -1. Then it just stops, and I am not able to upgrade the named instance. There default instance is SQL 2005, however I had to install this named instance for a legacy app. Now we want to upgrade to 2005 and we are having issues. Any ideas?
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sqlagent007Asked:
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sqlagent007Author Commented:
I removed .net 2.0, then let the SQL server wizard install it, after that it worked.
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Microsoft SQL Server 2005

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