Defraggler Refusing to Scan External HD?

Hey, folks, just started getting into the tools you guys have on your site and I must say I'm really impressed. Liking what I see and all that.

One odd issue I'm having is that Defraggler refuses to scan or defrag my 3TB External Hard Drive. I know there's nothing physically wrong with the drive (Or at least I hope so!), and it works fine, I just figured I'd give defragging it a shot.

Now, Defragger can defrag things from teh USB cable (It's defragging a smaller drive I have right now), so I'm wondering if it's the 3TB filesize that's making it not want to scan or defrag? It's literally just stopping before it even starts.

This is a known issue. Currently Defraggler DOESN'T WORK for partitions bigger than maybe 1.5TB+