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Upgrade from K2 Five 5.0 to 5.1 - Cannot run Registration wizard after upgrade

This article was created in response to a support issue logged with K2. The content may include typographical errors and may be revised at any time without notice. This article is not considered official documentation for K2 software and is provided "as is" with no warranties.
This article has been archived, and/or refers to legacy products, components or features. The content in this article is offered "as is" and will no longer be updated. Archived content is provided for reference purposes only. This content does not infer that the product, component or feature is supported, or that the product, component or feature will continue to function as described herein.


In some cases when upgrading from K2 Five (5.0) to K2 Five (5.1) running the Registration Wizard will fail and display the following error:

HTTP Error 500.19 - Internal Server Error


After this is hit sequential runs will not render anything.


Unable to complete the Registration Wizard after upgrading to K2 Five (5.1).


This is a known issue, please contact K2 Support and request K2 Five (5.1) Fix Pack 1.