Jimbo

The crystal ball is a little bit cloudy today, so I could be taking this in a totally incorrect direction...

It looks like you're trying to download a file from a hard-coded path on your desktop. When you deploy your app to another computer, the file you're looking for isn't at the same path (notice that the path depends on the username and computer name, so just copying the files to the desktop won't fix it). This is just a guess though...

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