Error: A Channels DVR server was not found at

Hi,

I rebuilt my computer yesterday and reinstalled Channels DVR. My apple TV client and Apple iPhone client both work fine. They are connected to 192.168.1.120, my computer's local IP address. My Android client gives me the above error. I choose "At Home" and the IP address the DVR server is on but the same error pops up again. I have tried restarting my phone and it still says it can't find the server.
What's my next step?

Thanks, Doug

Firewall?

I thought that too. It seems correct. And the Apple devices work.
Latest update. Just tried again this morning and it works. I did reboot the computer last night between when I first reported the problem and now. I don't understand it but am moving on.
Thanks for responding.
Doug