Good slider, I like it, but comes with a learning curve. However, for your situation, when you uploaded the layer slider’s encounters skin to the skins folder in the plugin, are you sure you put it in this location:
/wp-content/plugins/LayerSlider/skins/encounters
Also, you may want to make sure you cleared your browser cache if you can…just in case. As for the slider code for import, I’m assuming you copied “all” of it and pasted it into the import field and clicked import?