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Problem: Invalid Class String Errors with WebAdmin or LiveMonitor

 

Product: All

Version & Build: All

 

Description of the Problem:

When attempting to log into WebAdmin and/or LiveMonitor or when trying to access the Settings options within WebMail or WebQuarantine, following error occurs:

Source : /WebAdmin/Login.aspx
Exeption Description Stack :
Invalid class string

call Stack :
   at LicObjActivatorLib.ActivatorClass.CreateLicensedInstance(String strProgID, String strKey)
   at Vircom.modusWebAdmin.VMAHelper.Server.GetServer()
   at Vircom.modusWebAdmin.UserControls.Login.CustomValidatorLogin_ServerValidate(Object source, ServerValidateEventArgs args)
   at System.Web.UI.WebControls.CustomValidator.OnServerValidate(String value)
   at System.Web.UI.WebControls.CustomValidator.EvaluateIsValid()
   at System.Web.UI.WebControls.BaseValidator.Validate()
   at Vircom.modusWebAdmin.UserControls.Login.ButtonSubmit_Click(Object sender, EventArgs e)
   at Vircom.modusWebAdmin.UserControls.Login.Page_Load(Object sender, EventArgs e)
   at System.Web.UI.Control.OnLoad(EventArgs e)
   at System.Web.UI.Control.LoadRecursive()
   at System.Web.UI.Control.LoadRecursive()
   at System.Web.UI.Control.LoadRecursive()
   at System.Web.UI.Page.ProcessRequestMain()

 

Solutions:

Windows 2000 Server:

This type of error, if accompanied by the lines "Server object error xxx, Server.CreateObject Failed", can occur if one of the program's components was not properly registered during the installation. There are 2 ways to fix it:

a) Manually register the specified component's dll file:

    • Make sure the dll is present on the server
    • Register at a Command Prompt:  go to the directory of the dll and use the regsvr32 command followed by the name of the dll file
      • E.g. if the "Server object error" quotes the aspupload.dll file, go to the directory containing that dll and type: regsvr32 aspupload.dll

b) Reinstall the component

 

Windows Server 2003:

The class string errors can point to problems with permissions settings in the registry.  To correct it, please follow the instructions outlined in this Microsoft Knowledge Base article: http://support.microsoft.com/kb/313222/

 

Modified 1/23/2007
Keywords: invalid class string
Article ID: 1434