Symptoms

K2 Designer for SharePoint stuck in a loading state.
 

Diagnoses

The following error occurs when trying to start a new K2 Workflow process.

Unable to load plug-in:
An exception occurred during the operation, making the result invalid. Check InnerException for exception details.
The remote server returned an error: NotFound.
The remote server returned an error: NotFound.

Unable to load plug-in:
An exception occurred during the operation, making the result invalid. Check InnerException for exception details.
The remote server returned an error: NotFound.
The remote server returned an error: NotFound.

Unable to load plug-in:
An exception occurred during the operation, making the result invalid. Check InnerException for exception details.
The remote server returned an error: NotFound.
The remote server returned an error: NotFound.

Unable to load plug-in:
An exception occurred during the operation, making the result invalid. Check InnerException for exception details.
The remote server returned an error: NotFound.
The remote server returned an error: NotFound.


 

Resolution

Running update manager resolved the issue.