Hi,
Could you let me know the exact Enesys RS Data Extension version you are using?
Can you possibly send me your query?
Do you get this problem with any list or a specific list only?
What type of list are you using (calendar, tasks, custom, document library, …)?
For this specific list, do you get the same error whatever the column?
You can send us your query by email if you prefer.
Regards,