GetWorkflowConstants expects parameter @IsWebAdmin

Email notifications in Nintex workflow were erroring out with this comment:
Failed to send notification. Procedure or function 'GetWorkflowConstants' expects parameter '@IsWebAdmin', which was not supplied.

These errors started happening out of no where (at least that we knew of), workflow hadn't changed and no modifications to system that we knew of.  This article mentioned after a new version was installed this happened.  Restarted SharePoint Timer server and workflows started working again.

SharePoint 2010 Search Error

In ULS Viewer getting error:
Illegal operation attempted on a registry key that has been marked for deletion.

Can't search in Web App get this error:

Resolve by:
1. Stopped/Started the SecurityTokenService application pool in IIS on all servers in the farm
2. Stopped/Started the Search Query and Site Settings Service on all the servers in the farm that query happens on (in Central Admin, Manage Services on Server)
That fixed it for me

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