July 13, 2017
Some visualizations in Spotfire Client version 7.8 are throwing the following error: "Please specify an aggregation method".
After upgrading to Spotfire 7.8, visualizations which worked all right in other versions throw an error to specify an aggregation method if they encounter the "DateTimeNow()" function.
A defect has been raised for this issue. As a workaround, try using "First( DateTimeNow() )" in the visualizations, instead of using the "DateTimeNow()" function by itself.