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A “Class not registered” error may occur on a K2 System when a Non Windows OS system is connected to an NLB cluster (i.e. a Linux Mail server). This is caused by the K2 Web Designer activation trying to create a virtual directory on the Non Windows OS system.

The error has been fixed by changing the logic by which the activation gets done for the K2 Web Designer.

Error Scenario Steps

Note: The steps below describe one scenario under which this error may occur. The steps are simplified and not all the steps will be shown or described.
  1. Run the K2 blackpearl installation on a server farm that has a Non Windows OS server connected on an NLB cluster
  2. Attempt to activate the K2 Web Designer for SharePoint component
  3. The "Class not registered" error will occur

Error Messages

The following error messages relate to this issue:
  1. Class not registered

Error Resolution

This Hotfix is contained within the latest K2 blackpearl 0807 Update. Install the update package to resolve the error.

The latest K2 blackpearl 0807 Update is available as an independent installation package which can be found here: https://portal.k2.com/downloads/bp/default.aspx.