Active Finder window... but can EasyFind find it?

Just found EasyFind but little about actually using it. I am looking for all files in a subtree that end ‘(1).jpg’. Where, unlike Finder (brackets seem to be operators for Finder), it digs scads of these files up, but from, I think, the entire external disk drive. ‘Location’ can only name it and not its folders. The option ‘Active Finder window’ seem not to be able to spot that I’ve moved to EasyFind from that window. IS having a plethora of Finder windows open screwing things up, or have I just not found the definitive EasyFind manual?

The Active Finder Window option isn’t functioning properly at this time. Development will have to look into this.