Hey - just thought I'd reply back here in case anyone is still having this problem. I managed to solve it by using a powered USB hub between my external hard drive and the Vu+Duo. I don't know why that helps, but I have not had any more "write error" messages or recording failures with overlapping timers (touch wood). Perhaps the external HDD wasn't pulling enough power from just the Vu+ box?? Not sure, but it works for me and may for others. FYI, my hub was a D-Link DUB-H4/B USB 2.0 4-Port Hub (about £15 on Amazon). Only down side is I usually power off my Vu+ overnight and it now means that the external HDD is essentially "on" or powered all the time. Long term, I don't know if this is bad for the drive, but haven't had any issues so far (again, touch wood). Anyway, just thought I'd post this in case it helps! :thumbsup: