We are on SharePoint 2013 & Workflow version 3.4.0.0.  I'm attempting to update to Workflow 3.6.1.0.

I stopped the Nintex Workflow Start service and started the installer.  It took several hours and there was an error, "Job(s) was/were never created for solution Nintex Common Components (NintexCommon.wsp) upgrade, waited for 3600 seconds".  The Nintex Workflow Licensing page says I am still on version 3.4.0.0.  There are no errors on the Solution Management page.  So I think the install didn't do anything.

I read in the form here that the installer would run faster if you clear the SharePoint Config Cache first.  I did that and ran installer again.  It was not faster; I got the same error and the Licensing page still says 3.4.0.0.

What should I do?