WD Hard Drive no longer showing up, but it is running

Hello all,
I have a WD 3200MT external hard drive that I plug in through USB. It has always worked no matter what operating system I have upgraded to (Currently running Yosemite on my Macbook Pro 13in mid 2012).
Today when I plugged it in I noticed that it made my trashcan full on my desktop. I figured it had something to do with all the stuff I have deleted off of the WD external drive. I "emptied trashcan" and it started emptying thousands of items. Some items were even running and it asked if I should skip them and continue. I let it go for a few minutes and then figured something wasn't right. I unplugged it (Just pulled it out) and now I can not get it to show back up when I plug it in. I can feel the external drive running and the lights are on, but nothing appears on my Macbook.
My trashcan shows a "Recovered files" and "Recovered Files #1" folders. Can anyone help me out? I have tried searching all over.
Thanks!

After being plugged in for 30 minutes, this just popped up on my screen.

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