SharePoint Services 2 and Framework 3.5 SP1 Error

Recientemente fue publicado en el blog oficial de SharePoint 2007, un inconveniente que se presenta cuando instalan el Framework 3.5 con Sp1 en un servidor que hostea SharePoint Services 2.0.

Les copio el articulo original :

Symptoms

If .NET Framework 3.5 SP 1 is installed on Windows SharePoint Services v2.0 the symptoms are:

Each web part will display the following error:

Web Part Error: A Web Part or Web Form Control on this Web Part Page cannot be displayed or imported because it is not registered on this site as safe.

Also, the following NT Events are reported:

NT Event Viewer Application Log displays multiple error warnings:

Event ID: 1000

Error initializing Safe control - Assembly: Microsoft.SharePoint, Version=11.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c TypeName: * Namespace: Microsoft.SharePoint.SoapServer Error: Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

Workaround:

Workaround:  Uninstall In Add/Remove Programs remove Microsoft .NET Framework 3.5 SP 1 and Microsoft .NET Framework 3.0 and uninstall Microsoft .NET Framework 2.0.  Then reinstall .NET Framework 2.0 Service Pack 1 http://www.microsoft.com/downloads/details.aspx?FamilyID=79bc3b77-e02c-4ad3-aacf-a7633f706ba5&DisplayLang=en.

At the time of writing Microsoft is investigating this issue but there is no timeframe for a resolution. If you need further assistance with this please contact Microsoft support. http://support.microsoft.com