Allow us to predict errors

Lets say I convert results into a table but there are no results.. that means the formatting I applied will fail , since there is nothing to format. What bothers me, is that it DESTROYS the report, and even worse, STOPS THE UPDATE OF EVERY VISUALIZATION.. If that wasn't bad enough, the end user (not the publisher) has no idea this has occured, because the visualizations still show the last updated result, instead of showing "There's no data" or "There's an error". I am forced to tell my users "no , its working fine, its just that it cant deal with no data".. when all it would take is to allow us to set a default result in case formatting failed. In case my dataset is empty for some reason, just let me place "There's no data for today" as an example. Thank you and extremely good job so far.