Please select at least one layer to duplicate. Error Box
When I used Paddy after I clicked off the artboard or selected another element I get an error box that says "Please select at least one layer to duplicate." with an OK button. If I disable the Paddy plugin everything works fine. 
<img width="421" alt="screen shot 2018-02-17 at 1 28 10 pm" src="https://user-images.githubusercontent.com/1294556/36344891-a9397cd0-13e6-11e8-9130-3ab124c83ea6.png">

Sketch 48.2

Plugins
Runner
Abstract
Brand.ai
Midnight
Rename It
Sketch Guides
Sketch Measure
Craft
Zeplin