Error message when you register an assembly in SQL Server 2005: "CREATE ASSEMBLY for assembly 'Microsoft.SqlServer.Smo' failed because assembly 'microsoft.sqlserver.batchparser' is malformed or not a pure .NET assembly"

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SYMPTOMS

When you register an assembly in Microsoft SQL Server 2005, you receive the following error message:

Server: Msg 6544, Level 16, State 1, Line 1
CREATE ASSEMBLY for assembly 'Microsoft.SqlServer.Smo' failed because assembly 'microsoft.sqlserver.batchparser' is malformed or not a pure .NET assembly.
Unverifiable PE Header/native stub.

This problem occurs if the assembly references the Microsoft.SqlServer.Management.Smo namespace.

Note The Microsoft.SqlServer.Management.Smo namespace resides in the Microsoft.SqlServer.Smo.dll file.

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CAUSE

This problem occurs because you cannot use the Microsoft.SqlServer.Management.Smo namespace in the common language runtime (CLR) integration feature in SQL Server 2005.

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