Error Opening SSIS Package

I ran across a weird error when I was trying to open an existing SSIS package in VS2005.

Error 1. Error loading 'Package.dtsx' : Unable to cast COM object of type 'Microsoft.SqlServer.Dts.Runtime.Wrapper.PackageNeutralClass' to interface type 'Microsoft.SqlServer.Dts.Runtime.Wrapper.IDTSContainer90'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{8BDFE892-E9D8-4D23-9739-DA807BCDC2AC}' failed due to the following error: Library not registered. (Exception from HRESULT: 0x8002801D (TYPE_E_LIBNOTREGISTERED))

To fix the problem do the following:

1. Open the command prompt
2. Navigate to C:\Program Files\Microsoft SQL Server\90\DTS\Binn
3. Run C:\Program Files\Microsoft SQL Server\90\DTS\Binn>regsvr32 dts.dll

That should fix the problem.