This message appears when the query engine used by Blackbaud Sphere does not have enough resources or is currently unavailable to process the query results at the time it is ran.

When this happens:

1. You can attempt to run the query again
2. You can choose to save the query results.  This will allow you to check under Saved Query Results in Control > Query to be notified when the results have been processed.
3. Try changing Query filters to smaller values.  (For example, instead of "To Date" for a Date Range, instead break it down to 12 months at a time and run separate queries)