BitDefender Screwing up Transfers

About a week ago my TiVo Desktop started to intermittently fail mid file transfer (but most of the broadcast networks shows would get through). I installed kmttg and it was having problems as well ("missing CR" & 403 errors). I thought it was a powerline network issue, but turned out to be BitDefender.



My son has had BitDefender on his PC for some time & never complained about his TiVo Desktop transfers failing, so I'm thinking this behavior is fairly recent. Is this a known issue? Is there a way to tell BitDefender this traffic is okay?



Thanks