Resource not appearing in published file

Hi all: 

I have published a SL2 project with 4 resources added using the Resources button in the Player settings. All of the files were added from the same place on my machine (Desktop). One of the files does not seem to make it when I publish the project. I can clearly see it when I view the Resources from the Player settings, but it's not in my external files folder within the published files. Any idea how to resolve this? Image attached. 

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