NAV 2016 upgrade error during Data Upgrade step

Hi all,

I'm upgrading a database from 2009->2016. In the last step (going from 2015->2016) I am running the "Data Upgrade" step.

I'm getting the following error:
SessionId : 0
CodeunitId : 104050
FunctionName : CheckPreconditions
CompanyName : <Companyname>
StartTime :
Duration :
State : Failed
Error : There is no Active Session within the filter.

Filters: Server Instance ID: 1024, Session ID: 74

Any ideas?

Ron