You usually get that error when you try to put a variable that is too long into an automation type variable, or when an automation type variable returns a variable that is too long. Check the variable lengths in your dataport and build length checks into the dataport with clear error messages.
Comments
RIS Plus, LLC
http://www.mbsonline.org/forum/topic.asp?TOPIC_ID=12024
It may be relevant:
lenght of my keys were 200 char (each one). ](*,)
Z