Invalid Parameter: ObWorkflowName
This is a simple one, but a nuisance none-the-less.
Usually when you see this message it is because you have prepared the WorkflowName for a portal insert or IdXml incorrectly. You get the message once and figure out the correct value and life is good. However, what if you have been using a workflow for some time and then all of a sudden you get this message after moving environments. Chances are all that is different is the namespace of the directory entry where the workflow is defined. For instance the namespace could contain DC=DEV versus DC=PRD. Change the namespace and voila – the world is right again.