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Microsoft KB Archive/255196

From BetaArchive Wiki

Article ID: 255196

Article Last Modified on 8/7/2007


  • Microsoft Visual InterDev 6.0 Standard Edition

This article was previously published under Q255196


When you try to create a new project in Visual InterDev using the New Project Wizard, one of the following errors may occur:

Invalid Class String.
Looking for object with ProgID:VIWizard.CBlankSiteWizard

MS Dev Environment
class not registered
looking for object with class ID :[96045f70-8ED5-11D1-AC54-00A0C94A8147]

"Object variable or with block variable not set"


Viwz1.dll and Viwzrt.dll are not registered.


Follow these steps to resolve this problem:

  1. If you have not applied Visual Studio Service Pack 3 since you installed any Visual Studio program, apply this service pack.

    You can download Visual Studio Service Pack 3 from:
  2. Find the following .dll files on your system: Viwz1.dll and Viwzrt.dll, and then register them using Regsvr32. To do so: on the Start menu, click Run, and then type:

    regsvr32 "C:\Program Files\Microsoft Visual Studio\Common\Wizards98\viwz1.dll"

  3. Register VIWzrt.dll as well; In the Run box, type:

    regsvr32 "C:\Program Files\Common Files\Microsoft Shared\Wizards98\VIWzrt.dll"


This behavior is by design.


When you install any part of Visual Studio, you must reapply Visual Studio Service Pack 3.


For more information on Visual Studio Service Pack 3 and its updates to Visual InterDev, see the following Web site:

Keywords: kbideproject kbprb kbwizard KB255196