BUG? Not play Video with pre-release 1.03.40

I updated to the pre-release 1.03.40, it solved my problem that D-LINK WDA-125  Rev A2 not working issue (previous firmware version only support Rev A1). I am happy with this.

But I found (one time)  when I try to play a video file, a message come out say that it is not supported format and cannot be played, I know it is supported as I played it before. So I turn off the device and turn on again, it all plays well. Kind of strange, maybe a small bug with the new firmware version. 

It might not be the firmware – with a new firmware you normally need to reset the unit, so you might try that first (use the reset option in settings and then make sure you enter all your network and other info in again).