SSH crashes on large transfers

I’m currently trying to copy a folder that’s just over 1 GB from my ATV2 to my Mac.  about 25% of the way through the copy, that action somehow crashes the ATV2.  I’ve tried it 3 times with the same result.  What could cause this and is there any way to fix it?  Is it possible to transfer files via the USB cable and software like DiskAid?