When running the K2 smartforms Setup Manager to re-configure or repair your K2 environment, the SharePoint integrated workflows association to their respective SharePoint lists are broken. This results in new workflows failing to start automatically and no new instances can be started. Only workflows deployed from K2 Studio or K2 for Visual Studio are affected.
The workflows are deleted from certain tables in the K2 database when running the K2 smartforms Setup Manager.
If you have already upgraded to K2 4.7 and have experienced this issue, redeploy your affected K2 workflows in K2 Studio or K2 for Visual Studio. This will recreate the association with the SharePoint List or Library. If you have not yet upgraded to K2 4.7 download K2 smartforms 4.7 (4.16060.2000.3) from K2 Partner and Customer Portal and run the Setup Manager.