this morning, I updated Nintex Workflow 2013 to the last version (3.0.8) in our environment. After the upgrade, I continued with the upgrade of the databases. The Database Setup page says it's at 22.214.171.124.
After this, my existing workflow won't start anymore. It just fails with the error:
Failed to start workflow. Procedure or function 'CreateWorkflowInstance' expects parameter '@InstanceID', which was not supplied.
I checked Central Administration, database should be ok.
I did an IISRESET
I even reactivated al features
I ran nwadmin -o upgradedatabases
I created a new workflow and this works just fine.