Workaround: If PowerDVD Remote fails to find a server, open the task manager and look for PowerDVDAgent.exe. End the process. Wait for it to close, then open it again manually. The default location is C:\Program Files\Cyber Link\PowerDVD12\PowerDVDAgent.exe. Your mobile device should now be able to find a server. If it doesn't work, try repeating the process. I've never had to do it more than 4 times in a row to get to to work.
I'd love it if anybody could tell me how to make a shortcut on my desktop that will do this all with a single double-click. The best I've been able to do is make a shortcut for PowerDVDAgent.exe, but I still have to hunt down the process in the task manager.