Just created a new process that receives an InfoPath form via Form Services.  It's a pretty basic form as well as process.  I've re-created the process several times and keep getting this error in Service Manager.

System.Exception: Value does not fall within the expected range.
   at K2Code13491.SendDocURL(ClientEventContext K2)
   at K2Code13491.Main(ClientEventContext K2)

The form gets submitted fine, a copy of the form is uploaded via Sharepoint Event.  But then fails when it gets to creating the temporary approval form in the Approvals directory. 

Any Ideas?