So I've been playing around and learning about NRA:N for the past week or so and have had no issues aside from this one bug. Anyway the bug occured after adding in a arcade game ( I think it was the 6th one that I had added) and going through my normal process of setting it up, of using Rom Center to fix any problems then using the Atract Screen Tool to add the video to the AtrractScreens.mp4 file, and then using Vegas to take the audio from that video and save it as a separate .mp3 file. So after doing that I set it to a cabinets in my arcade, load the arcade and POOF all of my attract screens stop working, and they just display the game image preview or the DCC logo, even though they are all assigned to the right file and their respetive grid frames, and when veiwing the file in Vlc they all look as expected. After this I have tryed everything I can think of. Setting a different file as the attract screen reference. Veryfing the game files. Uninstalling and reinstalling the Attract Screen Tool. Completly wiping the game and uninstalling and reinstalling, and none of it worked. So I hope that you can find the fix for this (also if this is something realy Obvious sorry). And i'm happy to supply any files that you need from my game.
Oh and also the cab art and attract audio still work.