There is a “Filter” (dimmed) with an “X” to take it off,
a) The filter box isn’t clearly visible as such (missing a frame around, it comes up after clicking).
b) The “X” should be disabled / dimmed until there is a filter set to be deleted.
c) The filter is a bit strange, or is it not supposed to find file names, too?
Brand new interactions and interfaces. 
Easy to use and quick to get started. 
