Well, the cursor was already indexed.

The error was occurring when attempting to ZAP the cursor, not when indexing it.

>>Not easy to say, since the index key was constructed along the way based on user criteria (clicking on column headings).
>>
>>Problem disappeared after removal after filter and tags; not sure which was the culprit.
>>
>
>I'm almost sure it was the index. The index key expression can not exceed 240 char if memory serves right.