When you try to create a three-state workflow in SharePoint 2010 and SharePoint Foundation 2010, the state fields are maybe grayed out like in this screenshot below.


Cloud and Datacenter Blog focusing on Microsoft Azure
When you try to create a three-state workflow in SharePoint 2010 and SharePoint Foundation 2010, the state fields are maybe grayed out like in this screenshot below.

That did not fix my problem. Thanks anyway.
The “Status” column selection from the existing column choices worked for me.