Transfering files onto mybookworld triggers router to reset

Just like the subject says. When I try to transfer files from my computer to the MyBookWorld (blue rings), I get an error message saying that the drive either isn’t available or access was denied. Then my router resets. Truly wierd! When I’m streaming files or copying files from the Mybookworld none of this happens. I don’t have any read only settings. I even tried turning my firewalls off. still same thing happens.  does anyone have any input?

this could be a router issue when it’s resetting. i had bought a linksys modem/router v2 combo unit that did this but i figured that part out real fast and got my $$ back. the company even confirmed it was a known issue.