Apple TV does not see any external hard drive installed on the Mac. I could always watch my movies and series that are on the external hard drive in the Apple TV via infuse, but since I updated Yosemite to 10.10.3 I can not anymore. What should I do?
I know this doesn’t actually help your situation but it may help to know that 10.10.3 still works fine with Infuse. I’ve even switched my wifi from the modem/router to my AEBS in the last couple of days and it has not disrupted anything. I’d say its a network issue, at a guess.
Maybe try plugging in via ethernet?