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Thanks for the full log.
The IR Receiver USB device is used by Plex (PID 476)
An application is accessing the IR Receiver USB device via an IOUSBDeviceUserClient. Depending on what it is doing, this may keep OS X and applications from receiving Apple® Remote button presses. The application is located at /Applications/Plex Home Theater.app/Contents/MacOS/Plex Home Theater.
This is very odd since user space applications like Plex usually don’t have any way (or need) of accessing the Apple IR Receiver via the USB stack directly. If an application wanted to do this, it’d do this through a kernel extension (like Remote Buddy), but not through user space APIs like that.
On a quick search in Plex’ public code repository, I also can’t seem to find any code in Plex that would do this.
I also couldn’t reproduce this in my own testing.
Are you using any special/beta build of Plex - or any settings for/from a previous Intel Apple TV installation?
IR Receiver is paired to Apple® Remote ID 233
Your Mac® will ignore button presses from all Apple® Remotes that don't have this ID. Please note that the ID of an Apple® Remote can be changed accidentally by pressing a certain button combination for a few seconds. If your Mac® doesn't react to the button presses of your remote, please unpair your remote at System Preferences > Security to exclude this as a possible error source.
IR Receiver is enabled
Please unpair the remote as suggested by RCD.
If this doesn’t help, please go through all of the steps in the post linked below and see if it has an effect.
http://www.iospirit.com/support/forums/remotebuddy/singlethread/16572/
Best regards,
Felix Schwarz
